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Amer Physical Soc |
Documentos disponibles de esta editorial (185)
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In view of the recent experimental developments in ???^(0)? ? decay, and the fact that the Particle Data Group in the online edition of 2007 reports sizable changes of the radiative decay widths of vector mesons used as input in the theoretical [...]![]()
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Baity Jesi, Marco ; Calore, E. ; Cruz, A. ; Fernández Pérez, Luis Antonio ; Gil-Narvión,, J. M. ; Gordillo-Guerrero, A. ; Íñiguez, D. ; Maiorano, A. ; Marinari, E. ; Martín Mayor, Víctor ; Moreno-Gordo, J. ; Muñoz Sudupe, Antonio ; Navarro, D. ; Parisi, G. ; Pérez-Gaviro, S. ; Ricci-Tersenghi, F. ; Ruiz-Lorenzo, J. J. ; Schifano, S. F. ; Seoane, B. ; Tarancón, A. ; Tripiccione, R. ; Yllanes, D. | Amer Physical Soc | 2018-06-28Experiments on spin glasses can now make precise measurements of the exponent zðTÞ governing the growth of glassy domains, while our computational capabilities allow us to make quantitative predictions for experimental scales. However, experimen[...]![]()
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Gammaldi, Viviana ; Ávila-Reese, V. ; Valenzuela, O. ; González-Morales, A.X. | Amer Physical Soc | 2016-12-22We analyze the possibility that the HESS ?-ray source at the Galactic center could be explained as the secondary flux produced by annihilation of TeV dark matter (DM) particles with locally enhanced density, in a region spatially compatible with[...]![]()
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We study the phase diagram of the four-dimensional O(4) model with first- (?_(1)) and second- (?2) neighbor couplings, especially in the ?_(2)![]()
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Any nonclassical effect noticed in measured statistics is usually attributed just to the light state being observed. According to Born's rule, quantum probabilities are given by the overlap between the system state and measurement states in a qu[...]![]()
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Barceló, C. ; Garay Elizondo, Luis Javier ; Gonzalez Diaz, P. F. ; Mena Marugán, Guillermo A. | Amer Physical Soc | 1996-03-15Starting with a procedure for dealing with general asymptotic behavior, we construct a quantum theory for asymptotically anti-de Sitter wormholes. We follow both the path integral formalism and the algebraic quantization program proposed by Asht[...]![]()
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Blázquez Salcedo, José Luis ; González Romero, Luis Manuel ; Kunz, Jutta ; Mojica, Sindy ; Navarro Lérida, Francisco | Amer Physical Soc | 2016-01-28We investigate axial quasinormal modes of realistic neutron stars in Einstein-Gauss-Bonnet-dilaton gravity. We consider eight realistic equations of state containing nuclear, hyperonic, and hybrid matter. We focus on the fundamental curvature mo[...]![]()
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Azimuthal asymmetry in the risetime of the surface detector signals of the Pierre Auger Observatory.
Arqueros Martínez, Fernando ; García Pinto, Diego ; Minaya Flores, Ignacio Andrés ; Rosado Vélez, Jaime ; Vázquez Peñas, José Ramón | Amer Physical Soc | 2016-04-07The azimuthal asymmetry in the risetime of signals in Auger surface detector stations is a source of information on shower development. The azimuthal asymmetry is due to a combination of the longitudinal evolution of the shower and geometrical e[...]![]()
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Fraile Prieto, Luis Mario ; Mach, H. ; Paziy, V. ; Olaizola, B. ; Vedia, V. | Amer Physical Soc | 2014-12-01A smooth onset of collectivity in Kr^(88,92,94,96) has been determined from reported B(E2; 2_(1)^(+) ? 0_(1)^(+)) and E(2+ 1 ) values. This is in contrast to the sudden onset in even-even Zr, Mo, and Sr isotopes. Our objective was to complete th[...]![]()
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We present a theoretical framework for the study of surface-plasmon polariton (SPP) packets propagating along a lossy metal-dielectric interface within the paraxial approximation. Using a rigorous formulation based on the plane-wave spectrum for[...]![]()
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Ruiz Cembranos, José Alberto ; Dobado González, Antonio ; López Maroto, Antonio | Amer Physical Soc | 2006-02In the context of brane-world scenarios, we study the effects produced by the exchange of virtual massive branons. A one-loop calculation is performed which generates higher-dimensional operators involving SM fields suppressed by powers of the b[...]![]()
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We provide a very simple case showing that the weak form of the Heisenberg limit can be beaten while the prior information is improved without bias.![]()
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In this work we consider the spontaneous symmetry breaking of the electroweak SU(2)_(L) × U(1)_(Y) gauge group into U(1)_(em) taking place in the Standard Model of particle physics as seen from the point of view of an accelerating observer. Acco[...]![]()
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Flavigny, F. ; Pauwels, D. ; Radulov, D. ; Darby, I. J. ; Witte, H. de ; Diriken, J. ; Fedorov, D. V. ; Fedosseev, V. N. ; Fraile Prieto, Luis Mario ; Huyse, M. | Amer Physical Soc | 2015-03-09The low-energy structure of the neutron-rich nucleus Ni-68 has been investigated by measuring the beta decay of the low-spin isomer in Co-68 selectively produced in the decay chain of Mn-68. A revised level scheme has been built based on the cle[...]![]()
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Blázquez Salcedo, José Luis ; Kunz, Jutta ; Navarro Lérida, Francisco ; Radu, Eugen | Amer Physical Soc | 2017-03-13We consider rotating black hole solutions in five-dimensional Einstein-Maxwell-Chern-Simons theory with a negative cosmological constant and a generic value of the Chern-Simons coupling constant.. Using both analytical and numerical techniques, [...]![]()
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We consider an interacting pion gas in a stage of the system evolution where thermal but not chemical equilibrium has been reached, i.e., for temperatures between thermal and chemical freeze-out T(ther)![]()
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We present a model independent study of the chiral condensate evolution in a hadronic gas, in terms of temperature and baryon chemical potential. The meson- eson interactions are described within chiral perturbation theory and the pion-nucleon [...]![]()
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We study the pion mass dependence of the ?(770) and f_0(600) masses and widths from one and two-loop unitarized chiral perturbation theory ( ChPT). We show the consistency of one-loop calculations with lattice results for the M_?, f_? and the is[...]![]()
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We calculate the pion-pion elastic scattering phase shifts for pion masses from the chiral limit to values of interest for lattice studies. At low energies, we use the standard Chiral Perturbation Theory expressions to one and two loops. In addi[...]![]()
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Peláez Sagredo, José Ramón ; Pennington, M. R. ; Ruiz de Elvira, Jacobo ; Wilson, D. J. | Amer Physical Soc | 2011-11-09The leading 1=N_c behavior of unitarized chiral perturbation theory distinguishes the nature of the ? and the : The is a qq? meson, while the ? is not. However, semilocal duality between resonances and Regge behavior cannot be satisfied for lar[...]![]()
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We investigate the charged-neutral difference in the pion self-energy at finite temperature T. Within chiral perturbation theory (ChPT) we extend a previous analysis performed in the chiral and soft pion limits. Our analysis with physical pion m[...]![]()
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We analyze chiral restoration within the O(N + 1)/ O(N) nonlinear sigma model for large N as an effective theory for low-energy QCD at finite temperature T. The free energy is constructed diagrammatically to O(TM^3) in the pion mass expansion, w[...]![]()
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Garay Elizondo, Luis Javier ; González Díaz, Pedro F. ; Mena Marugán, Guillermo A. ; Raya, José M. | Amer Physical Soc | 1997-06-15The quantization of circular strings in an anti-de Sitter background spacetime is performed, obtaining a discrete spectrum for the string mass. A comparison with a four-dimensional homogeneous and isotropic spacetime coupled to a conformal scala[...]![]()
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Di Matteo, Olivia ; Sánchez Soto, Luis Lorenzo ; Leuchs, G. ; Grassl, M. | Amer Physical Soc | 2017-02-28We develop a systematic coarse-graining procedure for systems of N qubits. We exploit the underlying geometrical structures of the associated discrete phase space to produce a coarse-grained version with reduced effective size. Our coarse-graine[...]![]()
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We give an exhaustive characterization of the complex saddle point configurations of the Gross-WittenWadia matrix model in the large-N limit. In particular, we characterize the cases in which the saddles accumulate in one, two, or three arcs, i[...]![]()
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When quantizing conformal dilaton gravity, there is a conformal anomaly which starts at two-loop order. This anomaly stems from evanescent operators on the divergent parts of the effective action. The general form of the finite counterterm, whic[...]![]()
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The soliton dynamics in the complex sine-Gordon equation, massive Thirring model, and sine-Gordon equation are shown to be closely related.![]()
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Guerrero Roman, Merce ; Rubiera García, Diego ; Saez-Chillon Gomez, Diego | Amer Physical Soc | 2020-12-16Constant roll inflation is analyzed in the presence of multiscalar fields which are assumed to be described by a constant roll rate each. The different cases are studied and the corresponding potentials are reconstructed. The exact solutions are[...]![]()
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In the framework of Einstein-Yang-Mills theories, we study the gauge Lorentz group and establish a particular correspondence between this case and a certain class of theories with torsion within RiemannCartan space-times. This relation is specia[...]![]()
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It has been recently shown that the presence of a vector field over cosmological scales could explain the observed accelerated expansion of the Universe without introducing either new scales or unnatural initial conditions in the early Universe,[...]![]()
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Einstein-Cartan theory is an extension of the standard formulation of general relativity characterized by a nonvanishing torsion. The latter is sourced by the matter fields via the spin tensor, and its effects are expected to be important at ver[...]![]()
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We present a detailed study of the cosmological evolution in general vector-tensor theories of gravity without potential terms. We consider the evolution of the vector field throughout the expansion history of the Universe and carry out a classi[...]![]()
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Cross sections for positron and electron collisions with an analog of the purine nucleobases: Indole
Chiari, Luca ; Zecca, Antonio ; Blanco Ramos, Francisco ; García, Gustavo ; Brunger, M.J. | Amer Physical Soc | 2015-01-26Quantitative information about positron and electron collisions with nucleobases is required in charged-particle track simulations to accurately model and assess any radiation damage at the subcellular level in biological systems. However, scatt[...]![]()
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Fraile Prieto, Luis Mario ; Vedia Fernández, María Victoria ; otros, ... | Amer Physical Soc | 2020-08-18Decay spectroscopy of the long-lived states in Tl-186 has been performed at the ISOLDE Decay Station at ISOLDE, CERN. The a decay from the low-spin (2(-)) state in Tl-186 was observed for the first time and a half-life of 3.4(-0.)(4)(+0.5) s was[...]![]()
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We improve the calculations of the ?????? decay within the context of meson chiral Lagrangians. We use a chiral unitary approach for [...]![]()
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Starting from the chiral perturbation theory Lagrangian, but keeping different masses for the charged and neutral mesons (m_u ? m_d), and using a previously developed nonperturbative unitary scheme that generates the lightest meson-meson resonan[...]![]()
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The decoherence interpretation of quantum measurements is applied to Wigner's-friend experiments. A framework in which all the experimental outcomes arise from unitary evolutions is proposed. Within it, a measurement is not completed until an un[...]![]()
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Aranda, V. M. ; Arqueros Martínez, Fernando ; García Pinto, Diego ; Minaya Flores, Ignacio Andrés ; Rosado, J. ; Vázquez Peñas, José Ramón | Amer Physical Soc | 2014-12-31Using the data taken at the Pierre Auger Observatory between December 2004 and December 2012, we have examined the implications of the distributions of depths of atmospheric shower maximum (X-max), using a hybrid technique, for composition and h[...]![]()
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Benito García, Jaime ; Fraile Prieto, Luis Mario ; Carmona, M. ; Galve Lahoz, Pablo ; García Díez, Miguel ; Ibañez, P. ; López Montes, Alejandro ; Martínez, M. C. ; Sánchez Parcerisa, Daniel ; Sánchez Tembleque, Víctor ; Udías Moinelo, José Manuel ; Vedia Fernández, María Victoria ; Villa Abaunza, Amaia ; otros, ... | Amer Physical Soc | 2020-07-29The structure of the doubly magic Sn-132(50)82 has been investigated at the ISOLDE facility at CERN, populated both by the beta(-) decay of In-132 and beta(-)-delayed neutron emission of In-133. The level scheme of Sn-13(2) is greatly expanded w[...]![]()
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We determine the values of the one- and two-loop low energy constants appearing in the SU(2) Chiral Perturbation Theory calculation of pion-pion scattering. For this we use a recent and precise sum rule determination of some scattering lengths a[...]![]()
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We compute the error threshold for the semion code, the companion of the Kitaev toric code with the same gauge symmetry group Z(2). The application of statistical mechanical mapping methods is highly discouraged for the semion code, since the co[...]![]()
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Vaveliuk, Pablo ; Martínez Matos, Óscar ; Ren, Yu-Xuan ; Lu, Rong-De | Amer Physical Soc | 2017-06-23A full propagation analysis on both fold-type and cusp-type caustic optical beams under various setups of obstructions is theoretically and experimentally performed. It is demonstrated that the self-healing property of caustic optical beams that[...]![]()
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We study the effect of a Chern-Simons term on the electrically charged and spinning solitons of several U(1) gauged models in 2 + 1 dimensions. These are vortices of complex scalar field theories, both with and without symmetry breaking dynamics[...]![]()
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The problem of the soliton motion in the case of a nonzero reflection coefficient is solved exactly within the framework of the inverse scattering method. A general method is given for obtaining the asymptotic expressions of the soliton angle va[...]![]()
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The electrical conductivity of a pion gas at low temperatures is studied in the framework of linear response and chiral perturbation theory. The standard ChPT power counting has to be modified to include pion propagator lines with a nonzero ther[...]![]()
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Hamilton, K. R. ; Zatsarinny, O. ; Bartschat, K. ; Rabasovic, M. S. ; Sevic, D. ; Marinkovic, B. P. ; Dujko, S. ; Atic, J. ; Fursa, D. V. ; Bray, I. ; McEachran, R. P. ; Blanco Ramos, Francisco ; García, G. ; Stokes, P. W. ; White, R. D. ; Brunger, M. J. | Amer Physical Soc | 2020-08-03We present angle-integrated and angle-differential cross sections for electron-impact excitation of the (5s(2)5p) P-2(1/2) -> (5s(2)6s) S-2(1/2) transition in atomic indium. Experimental data for six incident electron energies between 10 and 10[...]![]()
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Arqueros Martínez, Fernando ; García Pinto, Diego ; Minaya Flores, Ignacio Andrés ; Rosado Vélez, Jaime ; Vázquez Peñas, José Ramón | Amer Physical Soc | 2016-06-14The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory,[...]![]()
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We show that the latest and very precise dispersive data analyses require a large and very unnatural finetuning of the 1/N_c expansion at N_c = 3if the f_o(600) and K(800) light scalar mesons are to be considered predominantly q?q states, which[...]![]()
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The Navier-Stokes transport coefficients for a model of a confined quasi-two-dimensional granular gas of smooth inelastic hard spheres are derived from the Enskog kinetic equation. A normal solution to this kinetic equation is obtained via the C[...]![]()
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The equivalence of the noncommutative U(N) quantum field theories related by the ?-exact Seiberg-Witten maps is, in this paper, proven to all orders in the perturbation theory with respect to the coupling constant. We show that this holds for su[...]![]()
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Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; López Maroto, Antonio | Amer Physical Soc | 2011-01-25![]()
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Megías, G. D. ; Ivanov, M. V. ; González Jiménez, R. ; Caballero, J. A. ; Bárbaro, M. B. ; Donnelly, T. W. ; Udías Moinelo, José Manuel | Amer Physical Soc | 2015-02-11![]()
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The canonical structure of higher dimensional pure Chern-Simons theories is analyzed. It is shown that these theories have generically a nonvanishing number of local degrees of freedom, even though they are obtained by means of a topological con[...]![]()
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Dobado González, Antonio ; Llanes Estrada, Felipe José ; Oller, Jose Antonio | Amer Physical Soc | 2012-01-20In general relativity, there is a maximum mass allowed for neutron stars that, if exceeded, entails collapse into a black hole. Its precise value depends on details of the nuclear matter equation of state, a subject where much progress has been [...]![]()
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Krupa, K. ; Lange, E. ; Blanco Ramos, Francisco ; Barbosa, A. S. ; Pastega,, D. F. ; Sanchez, S. d’A. ; Bettega, M. H. F. ; García Jurado, G. | Amer Physical Soc | 2018-04-10We report on a combination of experimental and theoretical investigations into the elastic differential cross sections (DCSs) and integral cross sections for electron interactions with dichloromethane, CH?Cl?, in the incident electron energy ove[...]![]()
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The experimental results obtained in the last few years on kaon decays (K ? 2 ? and, above all, Ke4 decays) allow a reliable, model-independent determination of low energy ? ? scattering in the S0 wave. Using them and, eventually, other sets of[...]![]()
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Ferroelectric field-effect doping has emerged as a powerful approach to manipulate the ground state of correlated oxides, opening the door to a different class of field-effect devices. However, this potential is not fully exploited so far, sinc[...]![]()
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The beta-decay of Zn-81 to the neutron magic N = 50 nucleus Ga-81, with only three valence protons with respect to Ni-78, was investigated. The study was performed at the ISOLDE facility at CERN by means of gamma spectroscopy. The 81Zn half-life[...]![]()
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Fraile Prieto, Luis Mario ; Vedia Fernández, María Victoria ; Ibáñez García, Paula Beatriz ; Paziy, Vadym ; Pérez Liva, Mailyn ; Picado, E. ; Vidal, M. | Amer Physical Soc | 2016-04-04The levels in Sn-129 populated from the beta(-) decay of In-129 isomers were investigated at the ISOLDE facility of CERN using the newly commissioned ISOLDE Decay Station (IDS). The lowest 1/2(+) state and the 3/2(+) ground state in 129Sn are ex[...]![]()
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In scalar-field dark matter scenarios, a scalar-field soliton could form at the center of galactic halos, around the supermassive black holes that sit at the center of galaxies. Focusing on the large scalar-mass limit, where the soliton is forme[...]![]()
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Finite-temperature corrections to the effective potential and the energy-momentum tensor of a scalar field are computed in a perturbed Minkoswki spacetime. We consider the explicit mode decomposition of the field in the perturbed geometry and ob[...]![]()
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Fraile Prieto, Luis Mario ; Gallardo, M. C. ; Vedia Fernández, María Victoria ; otros, ... | Amer Physical Soc | 2018-10-03The C-12(alpha,gamma)O-16 reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced a width, gamma(11), of the bound 1(-) l[...]![]()
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Ivanov, M. V. ; Vignote, J. R. ; Alvarez Rodríguez, R. ; Meucci, A. ; Giusti, C. ; Udías Moinelo, José Manuel | Amer Physical Soc | 2016-07-14Optical potentials provide critical input for calculations on a wide variety of nuclear reactions, in particular, for neutrino-nucleus reactions, which are of great interest in the light of the new neutrino oscillation experiments. We present th[...]![]()
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We study the possible effects of classical gravitational backgrounds on the Higgs field through the modifications induced in the one-loop effective potential and the vacuum expectation value of the energymomentum tensor. We concentrate our study[...]![]()
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Wormhole boundary conditions for the Wheeler-DeWitt equation can be derived from the path integral formulation. It is proposed that the wormhole wave function must be square integrable in the maximal analytic extension of minisuperspace. Quantum[...]![]()
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Martin Benito, M. ; Garay Elizondo, Luis Javier ; Mena Marugán, Guillermo A. | Amer Physical Soc | 2008-10We quantize an inhomogeneous cosmological model using techniques that include polymeric quantization. More explicitly, we construct well-defined operators to represent the constraints and find the physical Hilbert space formed by their solutions[...]![]()
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The Immirzi ambiguity arises in loop quantum gravity when geometric operators are represented in terms of different connections that are related by means of an extended Wick transform. We analyze the action of this transform in gravity coupled w[...]![]()
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We consider models of scalar dark matter with a generic interaction potential and noncanonical kinetic terms of the K-essence type that are subleading with respect to the canonical term. We analyze the low-energy regime and derive, in the nonrel[...]![]()
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Aranda, V. M. ; Arqueros Martínez, Fernando ; García Pinto, Diego ; Minaya Flores, Ignacio Andrés ; Rosado, J. ; Vázquez Peñas, José Ramón | Amer Physical Soc | 2015-05-26Neutrinos in the cosmic ray flux with energies near 1 EeV and above are detectable with the Surface Detector array (SD) of the Pierre Auger Observatory. We report here on searches through Auger data from 1 January 2004 until 20 June 2013. No neu[...]![]()
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Garay Elizondo, Luis Javier ; Martin Benito, M. ; Mena Marugán, Guillermo A. | Amer Physical Soc | 2010-08-30The Gowdy cosmologies provide a suitable arena to further develop loop quantum cosmology, allowing the presence of inhomogeneities. For the particular case of Gowdy spacetimes with the spatial topology of a three-torus and a content of linearly [...]![]()
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The Ernst equation for gravitational fields with a two-parameter isometry group is formulated as a vanishing-curvature condition on an SU(2) or SU(1,1) bundle, both in the elliptic and hyperbolic cases. Bäcklund transformations are introduced as[...]![]()
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The inverse amplitude method is a powerful unitarization technique to enlarge the energy applicability region of effective Lagrangians. It has been widely used to describe resonances in hadronic physics, combined with chiral perturbation theory,[...]![]()
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The inverse amplitude method is a powerful unitarization technique to enlarge the energy applicability region of effective Lagrangians. It has been widely used to describe resonances in hadronic physics, combined with chiral perturbation theory,[...]![]()
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We investigate the isospin-violating mixing of the light scalar mesons a_0(980) and f_0(980) within the unitarized chiral approach. Isospin-violating effects are considered to leading order in the quark mass differences and electromagnetism. In [...]![]()
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Ballesteros, H. G. ; Carmona, J. M. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Tarancón, A. | Amer Physical Soc | 1997-04-15We study the antiferromagnetic RP^(2) model in four dimensions. We find a second order transition with two order parameters, one ferromagnetic and the other antiferromagnetic. The antiferromagnetic sector has mean- field critical exponents and a[...]![]()
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We analyze quark condensates and chiral (scalar) susceptibilities including isospin-breaking effects at finite temperature T. These include m(u) not equal m(d) contributions as well as electromagnetic (e not equal 0) corrections, both treated in[...]![]()
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It has long been known that the covariant formulation of quantum electrodynamics conflicts with the local description of states in the charged sector. Some of the solutions to this problem amount to modifications of the subsidiary conditions bel[...]![]()
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Predojevic, B. ; Sevic, D. ; Marinkovic, B. P. ; McEachran, R. P. ; Blanco Ramos, Francisco ; García, G. ; Brunger, M- J. | Amer Physical Soc | 2020-03-23We report on experimental elastic differential and integral cross sections for electron scattering from bismuth. The energy range of those measurements is 10-100 eV, while the scattered electron angular range in the differential cross section da[...]![]()
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We consider scalar dark-matter models where the theory has a shift symmetry only broken by the scalar mass term. We restrict ourselves to k-essence kinetic terms where the shift symmetric part of the Lagrangian is a function of the first derivat[...]![]()
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Single-field inflaton models in the kinetic dominance period admit formal solutions given by generalized asymptotic expansions called psi series. We present a method for computing psi series for the Hubble parameter as a function of the inflaton[...]![]()
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We consider the O(N + 1)/O(N) nonlinear sigma model for large N as an effective theory for low-energy QCD at finite temperature T, in the chiral limit. At T = 0 this formulation provides a good description of scattering data in the scalar channe[...]![]()
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Estevez, Jonathan ; Llanes Estrada, Felipe José ; Martínez Fernández, Victor ; Pastor Gutierrez, Álvaro | Amer Physical Soc | 2020-12-22We present a new computation in a field-theoretical model of Coulomb-gauge QCD of the first radial and angular excitations of a qqq system in an SU(3) flavor-singlet state, Lambda(S). The traditional motivation for the study is that the absence [...]![]()
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Alcazar, J. ; Ruiz Cembranos, José Alberto ; Dobado González, Antonio ; López Maroto, Antonio | Amer Physical Soc | 2003-04In the context of the brane-world scenarios with compactified large extra dimensions, we study the production of the possible massive brane oscillations (branons) in electron-positron colliders. We compute their contribution to the electroweak g[...]![]()
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A new level scheme of 80Ga has been determined. This nucleus was populated following the ?? decay of 80Zn at ISOLDE, CERN. The proposed level scheme is significantly different compared to the previously reported one and contains 26 levels up to [...]![]()
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Bicudo, Pedro ; Cardoso, Marco ; Llanes Estrada, Felipe José ; Van Cauteren, Tim | Amer Physical Soc | 2016-09-07We study the conjectured “insensitivity to chiral symmetry breaking” in the highly excited light baryon spectrum. While the experimental spectrum is being measured at JLab and CBELSA/TAPS, this insensitivity remains to be computed theoretically [...]![]()
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We present a general method for extracting the Gell-Mann-Low logarithmic derivative of an effective charge of an observable directly from data as a mean for empirically verifying the universal terms of the QCD beta function. Our method avoids th[...]![]()
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We present a complete one-loop calculation of all the two-meson scattering amplitudes within the framework of SU(3) chiral perturbation theory, which includes pions, kaons, and the eta. In addition, we have unitarized these amplitudes with the c[...]![]()
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Azcoiti, V. ; Laliena, V. ; Luo, X.Q. ; Piedrafita, C.E. ; di Carlo, G. ; Galante, A. ; Grillo, A.F. ; Fernández Pérez, Luis Antonio ; Vladikas, A. | Amer Physical Soc | 1993-07-01We present a comprehensive exposition of a method for performing numerical simulations of lattice gauge theories with dynamical fermions. Its main aspects have been presented elsewhere. This work is a systematic study of the feasibility of the m[...]![]()
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General relativity yields an analytical prediction of a minimum required mass of roughly similar to 0.08-0.09 M-circle dot for a star to stably burn sufficient hydrogen to fully compensate photospheric losses and, therefore, to belong to the mai[...]![]()
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Abreu, Luciano M. ; Favero, Aline G. ; Llanes Estrada, Felipe José ; García Sanchez, Alejandro | Amer Physical Soc | 2019-12-17We discuss pure q (q) over bar axial-vector mesons in the Tamm-Dancoff approximation of the Coulomb-gauge QCD model from North Carolina State University. While recent studies have put emphasis in configuration mixing with open meson-meson channe[...]![]()
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Alonso Orts, Manuel ; Nogales Díaz, Emilio ; San Juan, J. M. ; Nó, M. L. ; Piqueras de Noriega, Javier ; Méndez Martín, Bianchi | Amer Physical Soc | 2018-06-07Optical microcavities are key elements in many photonic devices, and those based on distributed Bragg reflectors (DBRs) enhance dramatically the end reflectivity, allowing for higher quality factors and finesse values. Besides, they allow for wi[...]![]()
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A multihit capacity setup was used to study the decay of the dripline nucleus 31Ar, produced at the ISOLDE facility at CERN. A spectroscopic analysis of the ?-delayed three-proton decay of 31Ar is presented for the first time together with a qua[...]![]()
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Arqueros Martínez, Fernando ; Blanco Ramos, Francisco ; García Pinto, Diego ; Minaya Flores, Ignacio Andrés ; Ortiz Ramis, Montserrat ; Rosado Vélez, Jaime ; Vázquez Peñas, José Ramón | Amer Physical Soc | 2014-07-25The surface detector array of the Pierre Auger Observatory provides information about the longitudinal development of the muonic component of extensive air showers. Using the timing information from the flash analog-to-digital converter traces o[...]![]()
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Ivanov, M. V. ; Antonov, A. N. ; Bárbaro, M. B. ; Giusti, C. ; Meucci, A. ; Caballero, J. A. ; González Jiménez, A. ; Moya de Guerra, Elvira ; Udías Moinelo, José Manuel | Amer Physical Soc | 2015-03-12Neutral current quasielastic ( anti) neutrino scattering cross sections on a C-12 target are analyzed using a realistic spectral function S( p, E) that gives a scaling function in accordance with the ( e, e') scattering data. The spectral functi[...]![]()
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Grieger, M. ; Hensel, T. ; Agramunt, J. ; Bemmerer, D. ; Degering, D. ; Dillmann, I. ; Fraile Prieto, Luis Mario ; Jordan, D. ; Koster, U. ; Marta, M. ; Mueller, S. E. ; Szuecs, T. ; Tain, J. L. ; Zuber, K. | Amer Physical Soc | 2020-06-24Ambient neutrons may cause significant background for underground experiments. Therefore, it is necessary to investigate their flux and energy spectrum in order to devise a proper shielding. Here, two sets of altogether ten moderated He-3 neutro[...]![]()
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Blázquez-Salcedo, José Luis ; Kunz, Jutta ; Navarro Lérida, Francisco ; Radu, Eugen | Amer Physical Soc | 2018-04-16A new class of black hole solutions of the five-dimensional minimal gauged supergravity is presented. They are characterized by the mass, the electric charge, two equal magnitude angular momenta and the magnitude of the magnetic potential at inf[...]![]()
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Several new subnanosecond lifetimes were measured in Pd-109 using the fast-timing beta gamma gamma (t) method. Fission fragments of the A = 109 mass chain were produced by bombarding natural uranium with 30 MeV protons at the Jyvaskyla Ion Guide[...]![]()
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Blázquez Salcedo, José Luis ; González Romero, Luis Manuel ; Navarro Lérida, Francisco ; Tchrakian, D. H. | Amer Physical Soc | 2013-07-16We have constructed numerically non-Abelian vortices in an SU(2) Chern-Simons-Higgs theory with a quartic Higgs potential. We have analyzed these solutions in detail by means of improved numerical codes and found some unexpected features we did [...]![]()
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Peropadre, B. ; Zueco, D. ; Porras Torres, Diego ; Garc?´a-Ripoll, J. J. | Amer Physical Soc | 2013-12-09The time and space resolved dynamics of a qubit with an Ohmic coupling to propagating 1D photons is studied, from weak coupling to the ultrastrong coupling regime. A nonperturbative study based on matrix product states shows the following result[...]![]()
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Gómez Nicola, Ángel ; Peláez Sagredo, José Ramón ; Ruiz de Elvira, Jacobo | Amer Physical Soc | 2010-10-14Four-quark correlators and the factorization hypothesis are analyzed in the meson sector within chiral perturbation theory. We define the four-quark condensate as lim(x -> 0) , which is equivalent to ot[...]![]()
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We compute the spectrum, mixing and interaction structure of scalar models with a general coupling to the scalar curvature. As it is well known the perturbative states of these theories are given by two massive spin-0 modes in addition to one ma[...]![]()
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Misner space is generalized to have the nonorientable topology of a Klein bottle, and it is shown that, in a classical spacetime with multiply connected space slices having such a topology, closed timelike curves are formed. Different regions on[...]![]()
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We propose a new mechanism for the formation of dark matter clumps in the radiation era. We assume that a light scalar field is decoupled from matter and oscillates harmonically around its vacuum expectation value. We include self-interactions a[...]![]()
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We study static, spherically symmetric black holes supported by the Euler-Heisenberg theory of electrodynamics and coupled to two different modified theories of gravity. Such theories are the quadratic f (R) model and Eddington-inspired Born-Inf[...]![]()
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The symmetries of unimodular gravity are clarified somewhat.![]()
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Teo, Yong Siah ; Struchalin, G. I. ; Kovlakov, E. V. ; Ahn, Daekun ; Jeong, Hyunseok ; Straupe, S. S. ; Kulik, S. P. ; Leuchs, Gerd ; Sánchez Soto, Luis Lorenzo | Amer Physical Soc | 2020-02-01We present a compressive quantum process tomography scheme that fully characterizes any rank-deficient completely positive process with no spurious a priori information. It uses randomly chosen input states and adaptive output von Neumann measur[...]![]()
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A previous work about inclusive proton decay in a nucleus is critically analyzed. Explicit new calculations are carried out in the deuteron, which turn out to be consistent with previous evaluations by other authors. By relating the inclusive de[...]![]()
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Pachón, Leonardo A. ; Relaño Pérez, Armando ; Peropadre, Borja ; Aspuru-Guzik, Alán | Amer Physical Soc | 2018-10-19Based on the connection between the spectral form factor and the probability to return, the origin of the energy level fluctuation 1/f(alpha) noise in fully chaotic and fully integrable systems is traced to the quantum interference between invar[...]![]()
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It is well known that an extremely accurate parametrization of the growth function of matter density perturbations in ACDM cosmology, with errors below 0.25%, is given by f(a) = ?^(?)_(m)(a) with ? ? 0.55. In this work, we show that a simple mo[...]![]()
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Garay Elizondo, Luis Javier ; Halliwel, Jonathan J. ; Mena Marugán, Guillermo A. | Amer Physical Soc | 1991-04-15We study a class of minisuperspace models consisting of a homogenous isotropic universe with a minimally coupled homogenous scalar field with a potential alpha cosh(2-phi) + beta sinh(2-phi), where alpha and beta are arbitrary parameters. This i[...]![]()
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We present and analyze a new set of Ward Identities which shed light on the distinction between different patterns of chiral symmetry restoration in QCD, namely O(4) vs O(4) x U(1)_A. The degeneracy of chiral partners for all scalar and pseudosc[...]![]()
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%'e compute the divergent part of the three-point vertex function of the non-Abelian Yang-Mills gauge field theory within the stochastic quantization approach to the one-loop order. This calculation allows us to find four renormalization constan[...]![]()
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Alonso, J.L. ; Boucaud, Ph. ; Martín Mayor, Víctor ; van der Sijs, A.J. | Amer Physical Soc | 2000-02-01The phase diagram at zero temperature of a lattice SU(2) scalar-fermion model in 211 dimensions is studied numerically and with mean-field methods. Special attention is devoted to the strong coupling regime. We have developed a new method to ada[...]![]()
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Blázquez Salcedo, José Luis ; González Romero, Luis Manuel ; Navarro Lérida, Francisco | Amer Physical Soc | 2013-05-31Here we investigate the axial w quasinormal modes of neutron stars for 18 realistic equations of state, most of them satisfying the 2M condition. In particular, we study the influence of the presence of hyperons and quarks in the core of the ne[...]![]()
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Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; Lineros, R.A. ; López Maroto, Antonio | Amer Physical Soc | 2011-04-11If the present dark matter in the Universe annihilates into standard model particles, it must contribute to the fluxes of cosmic rays that are detected on the Earth and, in particular, to the observed gamma-ray fluxes. The magnitude of such a co[...]![]()
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In this work we provide simple and precise parametrizations of the existing ?K scattering data from threshold up to 1.6 GeV, which are constrained to satisfy forward dispersion relations as well as three additional threshold sum rules. We also p[...]![]()
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We improve, in the energy region between the K?K threshold and ~ 1.4 GeV, the energy-dependent phase shift analysis of ? ? scattering presented in a previous paper. For the S0 wave, we have included more data above the K?K threshold and we hav[...]![]()
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We complete and improve the fits to experimental ? ? scattering amplitudes, both at low and high energies, that we performed in the previous papers of this series. We then verify that the corresponding amplitudes satisfy analyticity requirements[...]![]()
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Garcia-Martin, R. ; Kami?ski, Robert ; Peláez Sagredo, José Ramón ; Ruiz de Elvira, Jacobo ; Yndurain, F.J. | Amer Physical Soc | 2011-04-04We improve our description of ? ? scattering data by imposing additional requirements on our previous fits, in the form of once-subtracted Roy-like equations, while extending our analysis up to 1100 MeV. We provide simple and ready to use parame[...]![]()
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Using unitarized chiral perturbation theory methods, we perform a detailed analysis of the ? ? scattering poles f_0(600) and ?(770) behavior when medium effects such as temperature or density drive the system towards chiral symmetry restoration.[...]![]()
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Blázquez Salcedo, José Luis ; González Romero, Luis Manuel ; Navarro Lérida, F. | Amer Physical Soc | 2014-02-06In this paper, we analyze the quasinormal mode spectrum of realistic neutron stars by studying the polar modes. In particular, we calculate the fundamental mode (f mode), the fundamental pressure mode (p mode), and the fundamental curvature mode[...]![]()
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We calculate the combination 2a?_(0)-5a?(^2) (the Olsson sum rule) and the scattering lengths and effective ranges a?,a?^(2) and b?,b?^(I) dispersively (with the Froissart-Gribov representation) using, at low energy, the phase shifts for ? ? sca[...]![]()
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Arqueros Martínez, Fernando ; Blanco Ramos, Francisco ; García Pinto, Diego ; Minaya Flores, Ignacio Andrés ; Ortiz Ramis, Montserrat ; Rosado Vélez, Jaime ; Vázquez Peñas, José Ramón | Amer Physical Soc | 2014-03-14The emission of radio waves from air showers has been attributed to the so-called geomagnetic emission process. At frequencies around 50 MHz this process leads to coherent radiation which can be observed with rather simple setups. The direction [...]![]()
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Balanced homodyning, heterodyning, and unbalanced homodyning are three well-known sampling techniques used in quantum optics to characterize photonic sources in the continuous-variable regime. We show that for all quantum states and all observab[...]![]()
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Croccolo, Fabrizio ; García Fernández, Loreto ; Bataller, Henri ; Vailati, Alberto ; Ortiz de Zarate, José María | Amer Physical Soc | 2019-01-03Nonequilibrium temperature and concentration fluctuations inside a binary liquid mixture under the action of a temperature gradient relax back to equilibrium either due to conduction and diffusion at large wave numbers, or due to the quenching d[...]![]()
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Fernández Pérez, Luis Antonio ; Muñoz Sudupe, Antonio ; Ruiz Lorenzo, J. J. | Amer Physical Soc | 1994-11-01We propose a new real space renormalization group transformation useful for Monte Carlo calculations in theories with global or local symmetries. From relaxation arguments we de6ne the block-spin transformation with two tunable free parameters, [...]![]()
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Fernández Pérez, Luis Antonio ; Fernández Álvarez-Estrada, Ramón ; Sánchez Gómez, J. L. | Amer Physical Soc | 1983In this paper, proton decay in a large nucleus is studied in the framework of SU(5) grand unification theory (GUT). By using a method based upon the Green s-function technique of many-body physics, nuclear effects on spectator and pole terms are[...]![]()
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Bouhmadi Lopez, M. ; Garay Elizondo, Luis Javier ; González Díaz, Pedro F. | Amer Physical Soc | 2002-09-15We study the quantum vacuum fluctuations around closed Friedmann-Robertson-Walker (FRW) radiation-filled universes with a nonvanishing cosmological constant. These vacuum fluctuations are represented by a conformally coupled massive scalar field[...]![]()
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Martin Martinez, Eduardo ; Garay Elizondo, Luis Javier ; León, Juan | Amer Physical Soc | 2010-09-22A field in the vacuum state, which is in principle separable, can evolve to an entangled state in a dynamical gravitational collapse. We will study, quantify, and discuss the origin of this entanglement, showing that it could even reach the maxi[...]![]()
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The properties of the vacuum are described by quantum physics including the response to external fields such as electromagnetic radiation. Of the two parameters that govern the details of the electromagnetic field dynamics in vacuum, one is fixe[...]![]()
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We study the effects of asymptotically anti-de Sitter wormholes in low-energy field theory and give a general prescription for obtaining the local effective interaction terms induced by them. The choice of vacuum for the matter fields selects a [...]![]()
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Manzano, Gonzalo ; Horowitz, Jordan M ; Rodríguez Parrondo, Juan Manuel | Amer Physical Soc | 2018-08-06We analyze the production of entropy along nonequilibrium processes in quantum systems coupled to generic environments. First, we show that the entropy production due to final measurements and the loss of correlations obeys a fluctuation theorem[...]![]()
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The quantum state of a wormhole can be represented by a path integral over all asymptotically Euclidean four-geometries and all matter fields which have prescribed values, the arguments of the wave function, on a three-surface S which divides th[...]![]()
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Galan, Pablo ; Garay Elizondo, Luis Javier ; Mena Marugán, Guillermo A. | Amer Physical Soc | 2007-08The combined action of gravity and quantum mechanics gives rise to a minimum time uncertainty in the lowest order approximation of a perturbative scheme, in which quantum effects are regarded as corrections to the classical spacetime geometry. F[...]![]()
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We perform a quasinormal mode analysis of black-hole configurations in Bose-Einstein condensates (BECs). In this analysis we use the full Bogoliubov dispersion relation, not just the hydrodynamic or geometric approximation. We restrict our atten[...]![]()
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Valtierra, Iván F. ; Klimov, A.B. ; Leuchs, Gerd ; Sánchez Soto, Luis Lorenzo | Amer Physical Soc | 2020-03-02We present analytic expressions for the s-parametrized currents on the sphere for both unitary and dissipative evolutions. We examine the spatial distribution of the flow generated by these currents for quadratic Hamiltonians. The results are ap[...]![]()
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Blázquez Salcedo, José Luis ; Kunz, Jutta ; Navarro Lérida, Francisco ; Radu, Eugen | Amer Physical Soc | 2015-08-17Rotating black holes in Einstein-Maxwell-Chern-Simons theory possess remarkable features when the Chern-Simons coupling constant reaches a critical value. Representing single asymptotically flat black holes with horizons of spherical topology, t[...]![]()
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Jarillo, Javier ; García Villaluenga, Juan Pedro ; Cao García, Francisco Javier | Amer Physical Soc | 2018-09-04Brownian ratchets are small-scale systems which rectify thermal fluctuations to produce a net current of particles. They have inspired many models of molecular motors that perform transport in the noisy environment of living cells. For the most [...]![]()
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Castaño Tierno, Antonio ; Mohino Harris, Elsa ; Rodríguez Fonseca, María Belén ; Losada Doval, Teresa | Amer Physical Soc | 2018-12-16The thermocline is defined as the ocean layer for which the vertical thermal gradient is maximum. In the equatorial ocean, observations led to the use of the 20 °C isotherm depth (z20) as an estimate of the thermocline. This study compares z20 a[...]![]()
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In the framework of general relativity, a description of the matching conditions between two rotating perfect fluids spacetimes in terms of the kinematical properties of the fluids is introduced. The Einstein and Darmois equations are written us[...]![]()
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Gómez Nicola, Ángel ; Peláez Sagredo, José Ramón ; Ruiz de Elvira, Jacobo | Amer Physical Soc | 2013-01-02We analyze the properties of four-quark condensates and scalar susceptibilities in the meson gas, within finite temperature chiral perturbation theory (ChPT). The breaking of the factorization hypothesis does not allow for a finite four-quark co[...]![]()
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The imaginary time generating functional Z for the assless Schwinger model at nonzero chemical potential mu and temperature T is studied in a torus with spatial length L. The lack of Hermiticity of the Dirac operator gives rise to a nontrivial [...]![]()
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Arganda, E. ; Arqueros Martínez, Fernando ; Blanco Ramos, Francisco ; García Pinto, Diego ; Ortiz Ramis, Montserrat ; Rosado Vélez, Jaime ; Vázquez Peñas, José Ramón | Amer Physical Soc | 2011-12-30The Surface Detector of the Pierre Auger Observatory is sensitive to neutrinos of all flavors above 0.1 EeV. These interact through charged and neutral currents in the atmosphere giving rise to extensive air showers. When interacting deeply in t[...]![]()
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Arqueros Martínez, Fernando ; García Pinto, Diego ; Minaya Flores, Ignacio Andrés ; Vázquez Peñas, José Ramón | Amer Physical Soc | 2016-10-03We present a search for ultrarelativistic magnetic monopoles with the Pierre Auger observatory. Such particles, possibly a relic of phase transitions in the early Universe, would deposit a large amount of energy along their path through the atmo[...]![]()
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We analyze the Hawking radiation process due to collapsing configurations in the presence of superluminal modifications of the dispersion relation. With such superluminal dispersion relations, the horizon effectively becomes a frequency-dependen[...]![]()
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Coulomb-excitation experiments to study electromagnetic properties of radioactive even-even Hg isotopes were performed with 2.85 MeV=nucleon mercury beams from REX-ISOLDE. Magnitudes and relative signs of the reduced E2 matrix elements that coup[...]![]()
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The beta decay of Pb-192,Pb-190 has been studied using the total absorption technique at the ISOLDE (CERN) facility. The beta-decay strength deduced from the measurements, combined with QRPA theoretical calculations, allow us to infer that the g[...]![]()
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Chinea Trujillo, Francisco Javier ; Fernández Jambrina, Leonardo ; Senovilla, J. M. M. | Amer Physical Soc | 1992-01-15We show that the solution published in the paper by Senovilla [Phys. Rev. Lett. 64, 2219 (1990)] is geodesically complete and singularity-free. We also prove that the solution satisfies the stronger energy and causality conditions, such as globa[...]![]()
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We study the simplest SO(2) gauged O(5) Skyrme model in 4 + 1 (flat) dimensions. In the gauge decoupled limit, the model supports topologically stable solitons (Skyrmions) and after gauging, the static energy of the solutions is bounded from bel[...]![]()
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The relationship between the soliton dynamics provided by the classical sine-Gordon and massive Thirring models is exhibited. Solitons are characterized as classical relativistic particles through the consideration of their associated canonical [...]![]()
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The effect of the radiation modes on soliton motion in nonlinear lattices is investigated. A method based on the inverse scattering transform is developed, which enables us to characterize the position shifts of solitons due to their interaction[...]![]()
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We compare the statistical fluctuation properties of the baryon and meson experimental mass spectra with those obtained from theoretical models (quark models and lattice QCD). We find that for the experimental spectra the statistical properties [...]![]()
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The sigma model of closed strings spinning in the ? deformation of AdS_(5) × S^(5) leads to an integrable deformation of the one-dimensional Neumann-Rosochatius mechanical system. In this article we construct general solutions to this system tha[...]![]()
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We examine the linear stability of various configurations in Bose-Einstein condensates with steplike sonic horizons. These configurations are chosen in analogy with gravitational systems with a black hole horizon, a white hole horizon, and a com[...]![]()
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In this paper we prove that in a stationary axisymmetric SU(2) Einstein-Yang-Mills theory the most reasonable circularity conditions that can be considered for the Yang-Mills fields imply in fact that the field is of embedded Abelian type, or el[...]![]()
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We calculate, in the framework of stochastic quantization, the one-loop-divergent part of the gluon self-energy and the triple-gluon vertex of pure Yang Mills field theory, with an arbitrary choice of the stochastic gauge-fixing parameter. This [...]![]()
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We study the light quark mass dependence of the f_0(600), ?(800), ?(770), and K*(892) resonance parameters generated from elastic meson-meson scattering using unitarized one-loop chiral perturbation theory. First, we show that it is possible to [...]![]()
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We study the light quark mass dependence of the f _0(600), ?(800), ?(770), and K*(892) resonance parameters generated from elastic meson-meson scattering using unitarized one-loop chiral perturbation theory. First, we show that it is possible to[...]![]()
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We show how the tree-level unitarity violations of compactified extra dimensional extensions of the standard model become much stronger when the scalar sector is included in the bulk. This effect occurs when the couplings are not suppressed for [...]![]()
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Lobo, Francisco S. N. ; Olmo, Gonzalo J. ; Orazi, Emanuele ; Rubiera García, Diego ; Rustam, Azmat | Amer Physical Soc | 2020-11-06We study the structure and stability of traversable wormholes built as (spherically symmetric) thin shells in the context of Palatini f(R) gravity. Using a suitable junction formalism for these theories we find that the effective number of degre[...]![]()
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We analyze the structural and thermodynamic properties of D-dimensional (D > = 4), asymptotically flat or anti-de Sitter, electrically charged black hole solutions, resulting from the minimal coupling of general nonlinear electrodynamics to gene[...]![]()
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Sen, K. ; Marsik, P. ; Das, S. ; Perret, E. ; Andrés Prada, R. de ; Alberca, A. ; Biškup, N. ; Varela del Arco, María ; Bernhard, C. | Amer Physical Soc | 2017-06-06La_(1.85)Sr_(0.15)CuO?/La?CuO? (LSCO15/LCO) bilayers with a precisely controlled thickness of N unit cells (UCs) of the former and M UCs of the latter ([LSCO15_N/LCO_M]) were grown on (001)- oriented SrLaAlO? (SLAO) substrates with pulsed laser [...]![]()
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Teo, Y. S. ; Müller, C. R. ; Jeong, H. ; Hradil, Z. ; ?ehá?ek, J. ; Sánchez Soto, Luis Lorenzo | Amer Physical Soc | 2017-04-17We examine the moment-reconstruction performance of both the homodyne and heterodyne (doublehomodyne) measurement schemes for arbitrary quantum states and introduce moment estimators that optimize the respective schemes for any given data. In th[...]![]()
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Danchev, I. C. ; Antonov, A. N. ; Kadrev, D. N. ; Gaidarov, M. K. ; Sarriguren, P. ; Moya de Guerra, Elvira | Amer Physical Soc | 2020-06-16We derive the values of nuclear symmetry energy, its components, as well as pressure in finite nuclei at saturation density from their corresponding values in nuclear matter obtained in nonrelativistic Brueckner-Hartree-Fock calculations with th[...]![]()
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Background: Models describing nuclear fragmentation and fragmentation fission deliver important input for planning nuclear physics experiments and future radioactive ion beam facilities. These models are usually benchmarked against data from sta[...]![]()
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Antonov, A. N. ; Kadrev, D. N. ; Gaidarov, M. K. ; Sarriguren, P. ; Moya Valgañón, Elvira | Amer Physical Soc | 2018-11-26The temperature dependence of the volume and surface components of the nuclear symmetry energy (NSE) and their ratio is investigated in the framework of the local density approximation. The results of these quantities for finite nuclei are obtai[...]![]()
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We construct new phenomenological tests of perturbative QCD by considering a hypothetical au lepton of arbitrary mass which decays hadronically through the electromagnetic current. Its adronic branching ratio can be computed directly as an int[...]![]()
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Spacetime foam can be modeled in terms of nonlocal effective interactions in a classical nonfluctuating background. Then, the density matrix for the low-energy fields evolves, in the weak-coupling approximation, according to a master equation th[...]![]()
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Dobado González, Antonio ; Gómez Nicola, Ángel ; Llanes Estrada, Felipe José ; Peláez Sagredo, José Ramón | Amer Physical Soc | 2002-11We study the temperature evolution of the rho and sigma mass and width, using a unitary chiral approach. The one-loop pipi scattering amplitude in chiral perturbation theory at Tnot equal0 is unitarized via the inverse amplitude method. Our resu[...]![]()
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Kristiansen, Kim R. ; Barragán García, Vicenta María ; Kjelstrup, Signe | Amer Physical Soc | 2019-04-12A thermoelectric cell is designed and experiments are carried out in order to measure Seebeck coefficients of ion exchange membranes at different constant concentrations of NaCl in water. The purpose of the investigation is to explore how a temp[...]![]()
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Díaz Fernández, Álvaro ; del Valle, N. ; Diaz, E. ; Domínguez-Adame Acosta, Francisco | Amer Physical Soc | 2018-08-20A topological boundary can be formed at the interface between a trivial and a topological insulator. The difference in the topological index across the junction leads to robust gapless surface states. Optical studies of these states are scarce i[...]![]()
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Gutierrez Reyes, Daniel ; Scimemi, Ignazio ; Waalewijn, Wouter J. ; Zoppi, Lorenzo | Amer Physical Soc | 2018-10-03We investigate the use of jets to measure transverse- momentum-dependent distributions (TMDs). The example we use to present our framework is the dijet momentum decorrelation at lepton colliders. Translating this momentum decorrelation into an a[...]![]()
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In this work we study the chiral phase transition as observed by an accelerating observer taking into account the Unruh effect. We use chiral perturbation theory at leading order and the large N limit (N being the number of pions) as an effectiv[...]![]()
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Díaz García, Elena ; Villas, A. ; Cabrera Granado, E. ; Calderon, O. G. | Amer Physical Soc | 2018-10-09We study the tunability of nanofilms composed of linear molecular aggregates for slow- and fast-light performance. In order to describe a wide range of intensity field regimes, we consider a two-exciton model for the molecular aggregate where ex[...]![]()
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The Einstein field equations for twisting, type-N fields in empty space possessing two noncommuting Killing vectors are reduced to a single second-order ordinary differential equation for a complex function. Alternative forms of this basic equat[...]![]()
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Fluctuations around a Bose-Einstein condensate can be described by means of Bogolubov theory leading to the notion of quasiparticle and antiquasiparticle familiar to nonrelativistic condensed-matter practitioners. On the other hand, we already k[...]![]()
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Three decades of work on the quantum field equations of pure Yang-Mills theory have distilled two families of solutions in Landau gauge. Both coincide for hig (Euclidean) momentum with known perturbation theory, and both predict an infrared supp[...]![]()
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Arqueros Martínez, Fernando ; García Pinto, Diego ; Minaya Flores, Ignacio Andrés ; Vázquez Peñas, José Ramón ; otros, ... | Amer Physical Soc | 2016-11-30On September 14, 2015 the Advanced LIGO detectors observed their first gravitational wave (GW) transient GW150914. This was followed by a second GW event observed on December 26, 2015. Both events were inferred to have arisen from the merger of [...]![]()
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Delgado López, Rafael ; Dobado González, Antonio ; Llanes Estrada, Felipe José | Amer Physical Soc | 2015-04-27If the electroweak symmetry breaking sector turns out to be strongly interacting, the actively investigated effective theory for longitudinal gauge bosons plus Higgs can be efficiently extended to cover the regime of saturation of unitarity (whe[...]![]()
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By means of the inverse amplitude method we unitarize the elastic pion-nucleon scattering amplitudes obtained from heavy baryon chiral perturbation theory to O(q(3)). Within this approach we can enlarge their applicability range and generate the[...]![]()
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Martin Martinez, Eduardo ; Garay Elizondo, Luis Javier ; León, Juan | Amer Physical Soc | 2010-09-03We analyze the entanglement degradation provoked by the Hawking effect in a bipartite system Alice-Rob when Rob is in the proximities of a Schwarzschild black hole while Alice is free falling into it. We will obtain the limit in which the tools [...]![]()
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Berengut, J. C. ; Epelbaum, E. ; Flambaum, V. V. ; Hanhart, C. ; Meißner, U.-G ; Nebreda, G. ; Peláez Sagredo, José Ramón | Amer Physical Soc | 2013-04-10The quark mass dependences of light-element binding energies and nuclear scattering lengths are derived using chiral perturbation theory in combination with nonperturbative methods. In particular, we present new, improved values for the quark ma[...]![]()
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Vortices of the SO(2) gauged planar Skyrme model with (a) only Maxwell, (b) only Chern-Simons, and (c) both Maxwell and Chern-Simons dynamics are studied systematically. In cases (a) and (b), where both models feature a single parameter lambda ([...]