2000 character limit reached
Irreversible mesoscale fluctuations herald the emergence of dynamical phases (2303.16701v3)
Published 29 Mar 2023 in cond-mat.stat-mech, cond-mat.soft, and physics.flu-dyn
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.