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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 [...]texto impreso
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[...]texto impreso
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[...]texto impreso
We study the phase diagram of the four-dimensional O(4) model with first- (?_(1)) and second- (?2) neighbor couplings, especially in the ?_(2)texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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.texto impreso
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[...]texto impreso
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[...]texto impreso
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, [...]texto impreso
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)texto impreso
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 [...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
The soliton dynamics in the complex sine-Gordon equation, massive Thirring model, and sine-Gordon equation are shown to be closely related.texto impreso
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[...]texto impreso
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[...]texto impreso
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,[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
We improve the calculations of the ?????? decay within the context of meson chiral Lagrangians. We use a chiral unitary approach for [...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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,[...]texto impreso
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[...]texto impreso
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[...]texto impreso
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[...]