Fluctuation relation and heterogeneous superdiffusion in glassy transport
Mauro Sellitto
TL;DR
This paper investigates current fluctuations and fluctuation relations in a lattice-gas model of glassy transport, revealing non-Gaussian behaviors and deviations linked to heterogeneous superdiffusion and amorphous correlations.
Contribution
It introduces a coarse-grained lattice-gas model to study fluctuation relations in glassy systems, highlighting the role of heterogeneity and superdiffusion.
Findings
Non-Gaussian current fluctuations observed
Deviations from fluctuation relation linked to amorphous correlations
Heterogeneous superdiffusion regimes identified
Abstract
Current fluctuations and related steady state fluctuation relation are investigated in simple coarse-grained lattice-gas analogs of a non-Newtonian fluid driven by a constant and uniform force field, in two regimes of small entropy production. Non-Gaussian current fluctuations and deviations from fluctuation relation are observed and related to the existence of growing amorphous correlations and heterogeneous anomalous diffusion regimes.
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