Hyperuniformity in cyclically driven glasses

Abstract

We present a numerical investigation of the density fluctuations in a model glass under cyclic shear deformation. At low amplitude of shear, below yielding, the system reaches a steady absorbing state in which density fluctuations are suppressed revealing a clear fingerprint of hyperuniformity up to a finite length scale. The opposite scenario is observed above yielding, where the density fluctuations are strongly enhanced. We demonstrate that the transition to this state is accompanied by a spatial phase separation into two distinct hyperuniform regions, as a consequence of shear band formation above the yield amplitude.

arXiv comment5 pages, 4 figures

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• Hyperuniformity and conservation laws in non-equilibrium systems
• How does a hyperuniform fluid freeze?
• Geometrical properties of mechanically annealed systems near the jamming transition
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• Correlation between plastic rearrangements and local structure in a cyclically driven glass
• Multi-multifractality and dynamic scaling in stochastic porous lattice
• Computational Methods toward Ultrastable Glasses
• Precise Determination of the Long-Time Asymptotics of the Diffusion Spreadability of Two-Phase Media