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Autor Muñoz Sudupe, Antonio |
Documentos disponibles escritos por este autor (47)
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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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Baity Jesi, Marco ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; otros, ... | Springer Heidelberg | 2012-08We describe Janus, a massively parallel FPGA-based computer optimized for the simulation of spin glasses, theoretical models for the behavior of glassy materials. FPGAs (as compared to GPUs or many-core processors) provide a complementary approa[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Seoane, B. ; Yllanes, D. ; otros, ... | American Physical Society | 2011-11-20We study the sample-to-sample fluctuations of the overlap probability densities from large-scale equilibrium simulations of the three-dimensional Edwards-Anderson spin glass below the critical temperature. Ultrametricity, stochastic stability, 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 | 1999-01-08Using Finite-Size Scaling techniques we obtain accurate results for critical quantities of the Ising model and the site percolation, in three dimensions. We pay special attention in parameterizing the corrections-to-scaling, what is necessary to[...]![]()
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Paga, I ; Fernández Pérez, Luis Antonio ; González-Adalid Pemartín, Isidoro ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Seoane Bartolomé, Beatriz ; otros, ... | American Physical Society | 2020-11-30The correlation length xi, a key quantity in glassy dynamics, can now be precisely measured for spin glasses both in experiments and in simulations. However, known analysis methods lead to discrepancies either for large external fields or close [...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; otros, ... | Elsevier Science Ltd | 2008-02-01We describe the hardwired implementation of algorithms for Monte Carlo simulations of a large class of spin models. We have implemented these algorithms as VHDL codes and we have mapped them onto a dedicated processor based on a large FPGA devic[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | American Physical Society | 2009-05-01We perform numerical simulations, including parallel tempering, a four-state Potts glass model with binary random quenched couplings using the JANUS application-oriented computer. We find and characterize a glassy transition, estimating the crit[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Seoane, B. ; Yllanes, D. ; otros, ... | American Physical Society | 2010-10-20We numerically study the aging properties of the dynamical heterogeneities in the Ising spin glass. We find that a phase transition takes place during the aging process. Statics-dynamics correspondence implies that systems of finite size in equi[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | National Academy of Sciences | 2017-02-21We have performed a very accurate computation of the non-equilibrium fluctuation- dissipation ratio for the 3D Edwards-Anderson Ising spin glass, by means of large-scale simulations on the special-purpose computers Janus and Janus II. This ratio[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; otros, ... | National Academy of Sciences | 2017-02-21The unifying feature of glass formers (such as polymers, supercooled liquids, colloids, granulars, spin glasses, superconductors, ...) is a sluggish dynamics at low temperatures. Indeed, their dynamics is so slow that thermal equilibrium is neve[...]![]()
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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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Cruz, A. ; Íñiguez, D. ; Fernández Pérez, Luis Antonio ; Muñoz Sudupe, Antonio ; Tarancón, A. | Elsevier Science BV | 1998-01-01The order of the Coulomb-Higgs transition in the U (1) -Higgs model with unfrozen modulus of the scalar field is studied. Large lattices (up to 24^4 in one case) and high statistics are used. We fix ? = 1.15 and explore specially a region of ?[...]![]()
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Cruz, A. ; Íñiguez, D. ; Tarancón, A. ; Fernández Pérez, Luis Antonio ; Muñoz Sudupe, Antonio | Elsevier Science BV | 1995-04We find a first order Coulomb-Higgs phase transition at moderately large values of the coupling ?, and no evidence for a change of order at any finite value of it.![]()
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Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; Parisi, G. ; Ruiz Lorenzo, J. J. | Elsevier | 1998-02-23Using finite-size scaling techniques, we study the critical properties of the site-diluted Ising model in four dimensions. We carry out a high-statistics Monte Carlo simulation for several values of the dilution. The results support the perturba[...]![]()
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Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio ; otros, ... | Natl acd sciences | 2019-07-30The Mpemba effect occurs when a hot system cools faster than an initially colder one, when both are refrigerated in the same thermal reservoir. Using the custom-built supercomputer Janus II, we study the Mpemba effect in spin glasses and show th[...]