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Journal Articles Physical Review Letters Year : 2014

Following the evolution of glassy states under external perturbations: compression and shear-strain

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Abstract

We consider the adiabatic evolution of glassy states under external perturbations. Although the formalism we use is very general, we focus here on infinite-dimensional hard spheres where an exact analysis is possible. We consider perturbations of the boundary, i.e. compression or (volume preserving) shear-strain, and we compute the response of glassy states to such perturbations: pressure and shear-stress. We find that both quantities overshoot before the glass state becomes unstable at a spinodal point where it melts into a liquid (or yields). We also estimate the yield stress of the glass. Finally, we study the stability of the glass basins towards breaking into sub-basins, corresponding to a Gardner transition. We find that close to the dynamical transition, glasses undergo a Gardner transition after an infinitesimal perturbation.
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cea-01463143 , version 1 (09-02-2017)

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Corrado Rainone, Pierfrancesco Urbani, Hajime Yoshino, Francesco Zamponi. Following the evolution of glassy states under external perturbations: compression and shear-strain. Physical Review Letters, 2014, ⟨10.1103/PhysRevLett.114.015701⟩. ⟨cea-01463143⟩
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