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Autor Muñoz Sudupe, Antonio |
Documentos disponibles escritos por este autor (47)
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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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Alonso, J. L. ; Ballesteros, H.G. ; Campos, I. ; Carmona, J. M. ; Clemente Gallardo, J. ; Fernández Pérez, Luis Antonio ; Íñiguez, D. ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Tarancón, A. ; Ullod, C. L. | Elsevier | 1997-02We present antiferromagnetism as a mechanism capable of modifying substantially the phase diagram and the critical behaviour of statistical mechanical models. This is particularly relevant in four dimensions, due to the connection between second[...]![]()
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Antonelli, S. ; Bartoloni, A. ; Battista, C. ; Bellacci, M. ; Cabasino, S. ; Cabibbo, N. ; Fernández Pérez, Luis Antonio ; Panizzi, E. ; Paolucci, P. S. ; Muñoz Sudupe, Antonio ; Ruiz Lorenzo, J. J. ; Sarno, R. ; Tarancón, A. ; Todesco, G. M. ; Torelli, M. ; Vinici, P. | Elsevier Science BV | 1995-04We present numerical results obtained in full QCD with 2 flavors of Wilson fermions. We discuss the relation between the phase of Polyakov loops and the sea quarks boundary conditions. We report prefiminary results about the HMC autocorrelation [...]![]()
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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Parisi, G. ; Ruiz Lorenzo, J. J. | American Physical Society | 2000-02-01We have studied numerically the effect of quenched site dilution on a weak first-order phase transition in three dimensions. We have simulated the site diluted three-states Potts model studying in detail the secondorder region of its phase diagr[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; otros, ... | IOP Publishing | 2010-05-05We study the 3D Disordered Potts Model with p = 5 and p = 6. Our numerical simulations (that severely slow down for increasing p) detect a very clear spin glass phase transition. We evaluate the critical exponents and the critical value of the t[...]![]()
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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | Elsevier | 1997-02We present the results of a Monte Carlo simulation of the antiferromagnetic RP^2 model in three dimensions. With finite-size scaling techniques we accurately measure the critical exponents and compare them with those of O(N) models. We are able [...]![]()
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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | American Physical Society | 1998-08-01We study the phase diagram of the site-diluted Ising model in a wide dilution range, through Monte Carlo simulations and finite-size scaling techniques. Our results for the critical exponents and universal cumulants turn out to be dilution indep[...]![]()
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Baity Jesi, Marco ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; otros, ... | American Physical Society | 2013-12-20We report a high-precision finite-size scaling study of the critical behavior of the three-dimensional Ising Edwards-Anderson model (the Ising spin glass). We have thermalized lattices up to L = 40 using the Janus dedicated computer. Our analysi[...]![]()
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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | Elsevier | 1997-01-13We study the behavior of the antiferromagnetic RP^2 model in d = 3. The vacuum structure is analyzed in the critical and low temperature regions, paying special attention to the spontaneous symmetry breaking pattern. Near the critical point we o[...]![]()
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Carmona, J. M. ; Cruz, A. ; Fernández Pérez, Luis Antonio ; Jiménez, S. ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Pech, J. ; Ruiz Lorenzo, J. J. ; Tarancón, A. ; Téllez, P. | Elsevier Science BV | 2003-05-08It is shown that a bosonic formulation of the double-exchange model, one of the classical models for magnetism, generates dynamically a gauge-invariant phase in a finite region of the phase diagram. We use analytical methods, Monte Carlo simulat[...]![]()
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Baity Jesi, Marco ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; otros, ... | American Physical Society | 2014-03-31We study the off-equilibrium dynamics of the three dimensional Ising spin glass in the presence of an external magnetic field. We have performed simulations both at fixed temperature and with an annealing protocol. Thanks to the Janus special-pu[...]![]()
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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | Elsevier Science BV | 1996-10-10We study the critical properties of three-dimensional O(N) models, for N = 2,3,4. Parameterizing the leading correctionsto-scaling for the r] exponent, we obtain a reliable infinite volume extrapolation, incompatible with previous Monte Carlo va[...]![]()
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Ballesteros, H.G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Parisi, G. ; Ruiz-Lorenzo, J. J. | Elsevier Science BV | 1998-04We study the four dimensional site-diluted Ising model using finite-size scaling techniques. We explore the whole parameter space (density-coupling) in order to determine the Universality Class of the transition line. Our data are compatible wit[...]![]()
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The generalization of the Slavnov-Taylor identities for the stochastically quantized Yang-Mills field theory with either Zwanziger gauge fixing or, equivalently, Faddeev-Popov Bow-gauge fixing in one higher dimension is presented. Those exact re[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; otros, ... | IEEE Computer Soc. | 2006-01Dedicated machines designed for specific computational algorithms can outperform conventional computers by several orders of magnitude. In this note we describe Ianus, a new generation FPGA based machine and its basic features: hardware integrat[...]![]()
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García Pérez, M. ; González Arroyo, A. ; Martínez, P. ; Fernández Pérez, Luis Antonio ; Muñoz Sudupe, Antonio ; Ruiz Lorenzo, J. J. ; Azcoiti, V. ; Campos, I. ; Ciria, J.C. ; Cruz, A. ; Íñiguez, D. ; Lesmes, F. ; Badoni, D. ; Pech, J. | Elsevier Science BV | 1993-05-20We study SU(2) lattice gauge theory in small volumes and with twist m ? = (1, 1, 1). We investigate the presence of the periodic instantons of Q = 1/2 and determine their free energy and their contribution to the splitting of energy flux sectors[...]![]()
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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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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Parisi, G. ; Ruiz Lorenzo, J. J. | IOP publishing ltd | 1997-12-21We study the site-diluted Ising model in two dimensions with Monte Carlo simulations. Using finite-size scaling techniques we compute the critical exponents observing deviations from the pure Ising ones. The differences can be explained as the e[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Yllanes, D. ; otros, ... | IEEE Computer Soc. | 2009-01This paper describes JANUS, a modular massively parallel and reconfigurable FPGA-based computing system. Each JANUS module has a computational core and a host. The computational core is a 4x4 array of FPGA-based processing elements with nearest-[...]![]()
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Baity Jesi, Marco ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; otros, ... | Elsevier Science Ltd | 2014-02This paper describes the architecture, the development and the implementation of Janus II, a new generation application-driven number cruncher optimized for Monte Carlo simulations of spin systems (mainly spin glasses). This domain of computatio[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | American Physical Society | 2017-04-13We first reproduce on the Janus and Janus II computers a milestone experiment that measures the spinglass coherence length through the lowering of free-energy barriers induced by the Zeeman effect. Secondly, we determine the scaling behavior tha[...]![]()
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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Parisi, G. ; Ruiz Lorenzo, J. J. | Elsevier Science BV | 1997-05-15Using finite-size scaling methods we measure the thermal and magnetic exponents of the site percolation in four dimensions, obtaining a value for the anomalous dimension very different from the results found in the literature. We also obtain the[...]![]()
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Ballesteros, H.G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Parisi, G. ; Ruiz Lorenzo, J. J. | Elsevier Science BV | 1997-05-15Using finite-size scaling methods we measure the thermal and magnetic exponents of the site percolation in four dimensions, obtaining a value for the anomalous dimension very different from the results found in the literature. We also obtain the[...]![]()
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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | American Physical Society | 1996-02-01We study three antiferromagnetic formulations of the O(3) spin model in three dimensions by means of Monte Carlo simulations: (1) a two parameter s model with nearest- and next-nearest neighbors couplings in a cubic lattice; (2) a face-centered-[...]![]()
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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | Elsevier Science BV | 1996-06-20We present the results of a Monte Carlo simulation of the RP^(2) model in three dimensions with negative coupling. We observe a second order phase transition between the disordered phase and an antiferromagnetic, unfrustrated, ordered one. We me[...]