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arXiv · 2303.16701

Irreversible mesoscale fluctuations herald the emergence of dynamical phases

Thomas Suchanek·Klaus Kroy·Sarah A. M. Loos
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Abstract

We study fluctuating field models with spontaneously emerging dynamical phases. We consider two typical transition scenarios associated with parity-time symmetry breaking: oscillatory instabilities and critical exceptional points. An analytical investigation of the low-noise regime reveals a drastic increase of the mesoscopic entropy production toward the transitions. For an illustrative model of two nonreciprocally coupled Cahn-Hilliard fields, we find physical interpretations in terms of actively propelled interfaces and a coupling of modes near the critical exceptional point.

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Thomas Suchanek, Klaus Kroy, Sarah A. M. Loos. 2023-03-29. Irreversible mesoscale fluctuations herald the emergence of dynamical phases. https://arxiv.org/abs/2303.16701

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