128 citations · 1.5k across the 42 of their papers we have counts for
26 papers · 1 filter
The Copycat Perceptron: Smashing Barriers Through Collective Learning
Giovanni Catania, Aurélien Decelle, Beatriz Seoane
We characterize the equilibrium properties of a model of coupled binary perceptrons in the teacher-student scenario, subject to a suitable cost function, with an explicit ferro…
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…
Thermodynamics of bidirectional associative memories
Adriano Barra, Giovanni Catania, Aurélien Decelle +1
In this paper we investigate the equilibrium properties of bidirectional associative memories (BAMs). Introduced by Kosko in 1988 as a generalization of the Hopfield model to a bip…
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…
The complexity of protein interactions unravelled from structural disorder
Beatriz Seoane, Alessandra Carbone
The idea that structural disorder might be a novel mechanism of protein interaction is widespread in the Literature, although the number of statistically significant structural stu…
Temperature chaos is present in off-equilibrium spin-glass dynamics
Janus Collaboration, M. Baity-Jesi, E. Calore +22
We find a dynamic effect in the non-equilibrium dynamics of a spin glass that closely parallels equilibrium temperature chaos. This effect, that we name dynamic temperature chaos,…
Learning a Local Symmetry with Neural-Networks
Aurélien Decelle, Victor Martin-Mayor, Beatriz Seoane
We explore the capacity of neural networks to detect a symmetry with complex local and non-local patterns : the gauge symmetry Z 2 . This symmetry is present in physical problems f…
The Mpemba effect in spin glasses is a persistent memory effect
Janus collaboration, M. Baity-Jesi, E. Calore +21
The 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…
Aging rate of spin glasses from simulations matches experiments
Janus Collaboration, M. Baity-Jesi, E. Calore +20
Experiments on spin glasses can now make precise measurements of the exponent governing the growth of glassy domains, while our computational capabilities allow us to make q…
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…
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…
Numerical detection of the Gardner transition in a mean-field glass former
Patrick Charbonneau, Yuliang Jin, Giorgio Parisi +3
Recent theoretical advances predict the existence, deep into the glass phase, of a novel phase transition, the so-called Gardner transition. This transition is associated with the…
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…
First Principle Computation of Random Pinning Glass Transition, Glass Cooperative Length-Scales and Numerical Comparisons
Chiara Cammarota, Beatriz Seoane
As a guideline for experimental tests of the ideal glass transition (Random Pinning Glass Transition, RPGT) that shall be induced in a system by randomly pinning particles, we perf…
Liquid-glass transition in equilibrium
G. Parisi, B. Seoane
We show in numerical simulations that a system of two coupled replicas of a binary mixture of hard spheres undergoes a phase transition in equilibrium at a density slightly smaller…
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…
Spin glasses, the quantum annealing, colloidal glasses and crystals: exploring complex free-energy landscapes
B. Seoane
Glassy behavior is one of the main open problems in condensed matter physics. In this thesis, we approach the problem by studying spin-glasses and colloids, using several complemen…
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…
Temperature chaos in 3D Ising Spin Glasses is driven by rare events
L. A. Fernandez, V. Martin-Mayor, G. Parisi +1
Temperature chaos has often been reported in literature as a rare-event driven phenomenon. However, this fact has always been ignored in the data analysis, thus erasing the signal…
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…
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…
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…