115 citations · 880 across the 25 of their papers we have counts for
22 papers · 1 filter
Quantifying memory in spin glasses
Janus Collaboration, I. Paga, J. He +24
Rejuvenation and memory, long considered the distinguishing features of spin glasses, have recently been proven to result from the growth of multiple length scales. This insight, e…
Multifractality in spin glasses
Janus Collaboration, M. Baity-Jesi, E. Calore +21
We unveil the multifractal behavior of Ising spin glasses in their low-temperature phase. Using the Janus II custom-built supercomputer, the spin-glass correlation function is stud…
Memory and rejuvenation in spin glasses: aging systems are ruled by more than one length scale
Janus Collaboration, M. Baity-Jesi, E. Calore +22
Memory and rejuvenation effects in the magnetic response of off-equilibrium spin glasses have been widely regarded as the doorway into the experimental exploration of ultrametricit…
On the superposition principle and non-linear response in spin glasses
I. Paga, Q. Zhai, M. Baity-Jesi +25
The extended principle of superposition has been a touchstone of spin glass dynamics for almost thirty years. The Uppsala group has demonstrated its validity for the metallic spin…
Support for the value 5/2 for the spin glass lower critical dimension at zero magnetic field
A. Maiorano, G. Parisi
We study numerically various properties of the free energy barriers in the Edwards-Anderson model of spin glasses in the low-temperature region both in three and four spatial dimen…
Dynamic Variational Study of Chaos: Spin Glasses in Three Dimensions
A. Billoire, L. A. Fernandez, A. Maiorano +6
We have introduced a variational method to improve the computation of integrated correlation times in the Parallel Tempering Dynamics, obtaining a better estimate (a lower bound, a…
Matching microscopic and macroscopic responses in glasses
Janus Collaboration, M. Baity-Jesi, E. Calore +20
We first reproduce on the Janus and Janus II computers a milestone experiment that measures the spin-glass coherence length through the lowering of free-energy barriers induced by…
Numerical construction of the Aizenman-Wehr metastate
A. Billoire, L. A. Fernandez, A. Maiorano +6
Chaotic size dependence makes it extremely difficult to take the thermodynamic limit in disordered systems. Instead, the metastate, which is a distribution over thermodynamic state…
A statics-dynamics equivalence through the fluctuation-dissipation ratio provides a window into the spin-glass phase from nonequilibrium measurements
Janus Collaboration, M. Baity-Jesi, E. Calore +20
The unifying feature of glass formers (such as polymers, supercooled liquids, colloids, granulars, spin glasses, superconductors, ...) is a sluggish dynamics at low temperatures. I…
The cumulative overlap distribution function in realistic spin glasses
A. Billoire, A. Maiorano, E. Marinari +2
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-An…
The three dimensional Ising spin glass in an external magnetic field: the role of the silent majority
Janus Collaboration, M. Baity-Jesi, R. A. Banos +22
We perform equilibrium parallel-tempering simulations of the 3D Ising Edwards-Anderson spin glass in a field. A traditional analysis shows no signs of a phase transition. Yet, we e…
Ultrametricity and long-range correlations in the Edwards-Anderson spin glass
A. Maiorano, G. Parisi, D. Yllanes
In recent times, the theoretical study of the three-dimensional Edwards-Anderson model has produced several rigorous results on the nature of the spin-glass phase. In particular, i…
Critical parameters of the three-dimensional Ising spin glass
Janus Collaboration, M. Baity-Jesi, R. A. Baños +22
We 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 latt…
Dynamical transition in the D = 3 Edwards-Anderson spin glass in an external magnetic field
Janus Collaboration, M. Baity-Jesi, R. Alvarez Baños +22
We 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 temperatu…
Comment on "Evidence of Non-Mean-Field-Like Low-Temperature Behavior in the Edwards-Anderson Spin-Glass Model"
A. Billoire, L. A. Fernandez, A. Maiorano +6
A recent interesting paper [Yucesoy et al. Phys. Rev. Lett. 109, 177204 (2012), arXiv:1206:0783] compares the low-temperature phase of the 3D Edwards-Anderson (EA) model to its mea…
Reconfigurable computing for Monte Carlo simulations: results and prospects of the Janus project
Janus Collaboration, M. Baity-Jesi, R. A. Banos +24
We 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 compare…
Thermodynamic glass transition in a spin glass without time-reversal symmetry
Janus Collaboration, R. A. Baños, A. Cruz +20
Spin glasses are a longstanding model for the sluggish dynamics that appears at the glass transition. However, spin glasses differ from structural glasses for a crucial feature: th…
Finite-size scaling analysis of the distributions of pseudo-critical temperatures in spin glasses
A. Billoire, L. A. Fernandez, A. Maiorano +3
Using the results of large scale numerical simulations we study the probability distribution of the pseudo critical temperature for the three-dimensional Edwards-Anderson Ising spi…
Sample-to-sample fluctuations of the overlap distributions in the three-dimensional Edwards-Anderson spin glass
The Janus Collaboration, R. Alvarez Baños, A. Cruz +21
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…
Static versus dynamic heterogeneities in the D = 3 Edwards-Anderson-Ising spin glass
Janus Collaboration, R. Alvarez Banos, A. Cruz +19
We 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-dy…
Nature of the spin-glass phase at experimental length scales
Janus Collaboration, R. Alvarez Banos, A. Cruz +19
We present a massive equilibrium simulation of the three-dimensional Ising spin glass at low temperatures. The Janus special-purpose computer has allowed us to equilibrate, using p…
Critical Behavior of Three-Dimensional Disordered Potts Models with Many States
R. Alvarez Banos, A. Cruz, L. A. Fernandez +18
We 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 ev…