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Athermal creep deformation of ultrastable amorphous solids
Pinaki Chaudhuri, Ludovic Berthier, Misaki Ozawa
We numerically investigate the athermal creep deformation of amorphous materials having a wide range of stability. The imposed shear stress serves as the control parameter, allowin…
Sampling efficiency of transverse forces in dense liquids
Federico Ghimenti, Ludovic Berthier, Grzegorz Szamel +1
Sampling the Boltzmann distribution using forces that violate detailed balance can be faster than with the equilibrium evolution, but the acceleration depends on the nature of the…
Emerging mesoscale flows and chaotic advection in dense active matter
Yann-Edwin Keta, Juliane Klamser, Robert L. Jack +1
We study two models of overdamped self-propelled disks in two dimensions, with and without aligning interactions. Active mesoscale flows leading to chaotic advection emerge in both…
Intermittent relaxation and avalanches in extremely persistent active matter
Yann-Edwin Keta, Rituparno Mandal, Peter Sollich +2
We use numerical simulations to study the dynamics of dense assemblies of self-propelled particles in the limit of extremely large, but finite, persistence times. In this limit, th…
Predicting dynamic heterogeneity in glass-forming liquids by physics-inspired machine learning
Gerhard Jung, Giulio Biroli, Ludovic Berthier
We introduce GlassMLP, a machine learning framework using physics-inspired structural input to predict the long-time dynamics in deeply supercooled liquids. We apply this deep neur…
Thirty milliseconds in the life of a supercooled liquid
Camille Scalliet, Benjamin Guiselin, Ludovic Berthier
We combine the swap Monte Carlo algorithm to long multi-CPU molecular dynamics simulations to analyse the equilibrium relaxation dynamics of model supercooled liquids over a time w…
Static self-induced heterogeneity in glass-forming liquids: Overlap as a microscope
Benjamin Guiselin, Gilles Tarjus, Ludovic Berthier
We propose and numerically implement a local probe of the static self-induced heterogeneity characterizing glass-forming liquids. The method relies on the equilibrium statistics of…
Disordered collective motion in dense assemblies of persistent particles
Yann-Edwin Keta, Robert L. Jack, Ludovic Berthier
We explore the emergence of nonequilibrium collective motion in disordered non-thermal active matter when persistent motion and crowding effects compete, using simulations of a two…
Excess wings and asymmetric relaxation spectra in a facilitated trap model
Camille Scalliet, Benjamin Guiselin, Ludovic Berthier
In a recent computer study, we have shown that the combination of spatially heterogeneous dynamics and kinetic facilitation provides a microscopic explanation for the emergence of…
Microscopic origin of excess wings in relaxation spectra of supercooled liquids
Benjamin Guiselin, Camille Scalliet, Ludovic Berthier
Glass formation is encountered in diverse materials. Experiments have revealed that dynamic relaxation spectra of supercooled liquids generically become asymmetric near the glass t…
Rare events and disorder control the brittle yielding of well-annealed amorphous solids
Misaki Ozawa, Ludovic Berthier, Giulio Biroli +1
We use atomistic computer simulations to provide a microscopic description of the brittle failure of amorphous materials, and we assess the role of rare events and quenched disorde…
Relaxation dynamics of non-Brownian spheres below jamming
Yoshihiko Nishikawa, Atsushi Ikeda, Ludovic Berthier
We numerically study the relaxation dynamics and associated criticality of non-Brownian frictionless spheres below jamming in spatial dimensions , , , and , and in th…
Low-frequency vibrations of jammed packings in large spatial dimensions
Masanari Shimada, Hideyuki Mizuno, Ludovic Berthier +1
Amorphous packings prepared in the vicinity of the jamming transition play a central role in theoretical studies of the vibrational spectrum of glasses. Two mean-field theories pre…
Nature of excitations and defects in structural glasses
Camille Scalliet, Ludovic Berthier, Francesco Zamponi
The nature of defects in amorphous materials, analogous to vacancies and dislocations in crystals, remains elusive. Here we explore their nature in a three-dimensional microscopic…
Universal relaxation dynamics of sphere packings below jamming
Atsushi Ikeda, Takeshi Kawasaki, Ludovic Berthier +2
We show that non-Brownian suspensions of repulsive spheres below jamming display a slow relaxational dynamics with a characteristic time scale that diverges at jamming. This slow t…
Front-mediated melting of ultrastable glasses
Elijah Flenner, Ludovic Berthier, Patrick Charbonneau +1
Ultrastable vapor-deposited glasses display uncommon material properties. Most remarkably, upon heating they are believed to melt via a liquid front that originates at the free sur…
Rejuvenation and Memory Effects in a Structural Glass
Camille Scalliet, Ludovic Berthier
We show numerically that a three-dimensional model for structural glass displays aging, rejuvenation and memory effects when submitted to a temperature cycle. These effects indicat…
Sound attenuation in stable glasses
Lijin Wang, Ludovic Berthier, Elijah Flenner +2
Understanding the difference between universal low-temperature properties of amorphous and crystalline solids requires an explanation of the stronger damping of long-wavelength pho…
Low-frequency vibrational modes of stable glasses
Lijin Wang, Andrea Ninarello, Pengfei Guan +3
We numerically study the evolution of the vibrational density of states of zero-temperature glasses when their kinetic stability is varied over an extremely broad range, ran…
Discontinuous shear-thickening in Brownian suspensions
Takeshi Kawasaki, Ludovic Berthier
Discontinuous shear-thickening in dense suspensions naturally emerges from the activation of frictional forces by shear flow in non-Brownian systems close to jamming. Yet, this phy…
The glass transition of soft colloids
Adrian-Marie Philippe, Domenico Truzzolillo, Julian Galvan-Myoshi +4
We explore the glassy dynamics of soft colloids using microgels and charged particles interacting by steric and screened Coulomb interactions, respectively. In the supercooled regi…
How active forces influence nonequilibrium glass transitions
Ludovic Berthier, Elijah Flenner, Grzegorz Szamel
Dense assemblies of self-propelled particles undergo a nonequilibrium form of glassy dynamics. Physical intuition suggests that increasing departure from equilibrium due to active…
Density controls the kinetic stability of ultrastable glasses
Christopher J. Fullerton, Ludovic Berthier
We use a swap Monte Carlo algorithm to numerically prepare bulk glasses with kinetic stability comparable to that of glass films produced experimentally by physical vapor depositio…
Origin of ultrastability in vapor-deposited glasses
Ludovic Berthier, Patrick Charbonneau, Elijah Flenner +1
Glass films created by vapor-depositing molecules onto a substrate can exhibit properties similar to those of ordinary glasses aged for thousands of years. It is believed that enha…