# Publications

## A crossover in spatio-temporal correlations of strain fluctuations in glass forming liquids

M. R. Hassani, M. M. Bruns, F. Varnik.

Journal of Statistical Mechanics: Theory and Experiment (JSTAT), **2020**, 014002, (2020)

Abstract

Via molecular dynamics simulations of a generic glass former in the supercooled and normal liquid states, it is shown that spatial correlations of strain fluctuations exhibit a crossover from the well-established power-law ~1/r^3-decay at long wavelengths to an exponential behavior, ~exp(-r/l_c) at intermediate distances. The characteristic length of the exponential decay grows both with temperature and time via,l_c \propto D(T)t , with D(T) being the temperature-dependent diffusion coefficient. This suggests that the crossover between the power-law and exponential decays is governed by a diffusion process.

**Keyword(s):**correlation functions; glasses (structural); plasticity; molecular dynamics

Cite as: https://iopscience.iop.org/article/10.1088/1742-5468/ab5366

DOI: 10.1088/1742-5468/ab5366

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