中文
相关论文

相关论文: Ultrametricity and long-range correlations in the …

200 篇论文

We test the property of ultrametricity for the spin glass three-dimensional Edwards-Anderson model in zero magnetic field with numerical simulations up to $20^3$ spins. We find an excellent agreement with the prediction of the mean field…

无序系统与神经网络 · 物理学 2007-10-04 P. Contucci , C. Giardina' , C. Giberti , G. Parisi , C. Vernia

We perform an accurate test of Ultrametricity in the aging dynamics of the three dimensional Edwards-Anderson spin glass. Our method consists in considering the evolution in parallel of two identical systems constrained to have fixed…

无序系统与神经网络 · 物理学 2009-10-31 Silvio Franz , Federico Ricci-Tersenghi

We 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…

We show results of simulations of a weakly driven four dimensional Edwards- Anderson spin glass, which presents clear signatures of dynamical ultrametricity at low temperatures. The presence of a hierarchical organization of time scales is…

无序系统与神经网络 · 物理学 2009-10-31 Daniel A. Stariolo

In a recent interesting Letter Contucci {\it et al.} have investigated several properties of the three-dimensional (3d) Edwards-Anderson (EA) Ising spin glass. They claim to have found strong numerical evidence for the presence of a complex…

无序系统与神经网络 · 物理学 2008-04-16 Thomas Jorg , Florent Krzakala

We characterize numerically the properties of the phase transition of the three dimensional Ising spin glass with Gaussian couplings and of the low temperature phase. We compute critical exponents on large lattices. We study in detail the…

统计力学 · 物理学 2009-10-31 E. Marinari , G. Parisi , J. J. Ruiz-Lorenzo

We use a constrained Monte Carlo technique to analyze ultrametric features of a 4 dimensional Edwards-Anderson spin glass with quenched couplings J=\pm 1. We find that in the large volume limit an ultrametric structure emerges quite clearly…

凝聚态物理 · 物理学 2009-10-28 Angelo Cacciuto , Enzo Marinari , Giorgio Parisi

In this paper we review the predictions of the replica approach on the probability distribution of the overlaps among replicas and on the sample to sample fluctuations of this probability. We stress the role of replica equivalence in…

无序系统与神经网络 · 物理学 2007-05-23 Giorgio Parisi

We comment on recent numerical experiments by G.Hed and E.Domany [cond-mat/0608535v2] on the quenched equilibrium state of the Edwards-Anderson spin glass model. The rigorous proof of overlap identities related to replica equivalence shows…

无序系统与神经网络 · 物理学 2007-05-23 P. Contucci , C. Giardina'

We compute numerically small window overlaps in the three dimensional Edwards Anderson spin glass. We show that they behave in the way implied by the Replica Symmetry Breaking Ansatz, that they do not qualitatively differ from the full…

无序系统与神经网络 · 物理学 2009-10-31 E. Marinari , G. Parisi , F. Ricci-Tersenghi , J. J. Ruiz-Lorenzo

We use a sample-dependent analysis, based on medians and quantiles, to analyze the behavior of the overlap probability distribution of the Sherrington-Kirkpatrick and 3D Edwards-Anderson models of Ising spin glasses. We find that this…

无序系统与神经网络 · 物理学 2014-09-16 A. Billoire , A. Maiorano , E. Marinari , V. Martin-Mayor , D. Yllanes

We investigate the dynamics of spin glasses from the `rheological' point of view, in which aging is suppressed by the action of small, non-conservative forces. The different features can be expressed in terms of the scaling of relaxation…

无序系统与神经网络 · 物理学 2009-10-31 Ludovic Berthier , Jean-Louis Barrat , Jorge Kurchan

Spin glasses are quintessential examples of complex matter. Although much about their order remains uncertain, abstract models of them inform, e.g., the classification of combinatorial optimization problems, the magnetic ordering in metals…

We study the 3D Edwards-Anderson spin glasses, by analyzing spin-spin correlation functions in thermalized spin configurations at low T on large lattices. We consider individual disorder samples and analyze connected clusters of very…

无序系统与神经网络 · 物理学 2015-03-20 A. Billoire , A. Maiorano , E. Marinari

We present a general and powerful numerical method useful to study the density matrix of spin models. We apply the method to finite dimensional spin glasses, and we analyze in detail the four dimensional Edwards-Anderson model with Gaussian…

无序系统与神经网络 · 物理学 2009-11-07 L. Correale , E. Marinari , V. Martin-Mayor

The mean field spin glass model is analyzed by a combination of mathematically rigororous methods and a powerful Ansatz. The method exploited is general, and can be applied to others disordered mean field models such as, e.g., neural…

无序系统与神经网络 · 物理学 2009-10-31 Francesco Baffioni , Francesco Rosati

Using Monte Carlo simulations, we study in detail the overlap distribution for individual samples for several spin-glass models including the infinite-range Sherrington-Kirkpatrick model, short-range Edwards-Anderson models in three and…

无序系统与神经网络 · 物理学 2014-10-29 Matthew Wittmann , B. Yucesoy , Helmut G. Katzgraber , J. Machta , A. P. Young

We investigate the low temperature phase of three-dimensional Edwards-Anderson model with Bernoulli random couplings. We show that at a fixed value $Q$ of the overlap the model fulfills the clustering property: the connected correlation…

无序系统与神经网络 · 物理学 2013-05-29 Pierluigi Contucci , Cristian Giardina , Claudio Giberti , Giorgio Parisi , Cecilia Vernia

After introducing and discussing the "link-overlap" between spin configurations we show that the Edwards-Anderson model has a "replica-equivalent" quenched equilibrium state, a property introduced by Parisi in the description of the…

统计力学 · 物理学 2009-11-10 Pierluigi Contucci

This reply shows that the argument presented in the comment by Jorg and Krzakala (cond mat 0709.0894) cannot be used to weaken the results presented in our paper on ultrametricity evidence in the 3d Edwards Anderson model (PRL 99, 057206,…

无序系统与神经网络 · 物理学 2013-05-29 Pierluigi Contucci , Cristian Giardinà , Claudio Giberti , Giorgio Parisi , Cecilia Vernia
‹ 上一页 1 2 3 10 下一页 ›