Irreversible Mesoscale Fluctuations Herald the Emergence of Dynamical Phases
Thomas H. Suchanek, Klaus Kroy, Sarah A. M. Loos
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 eigenmodes of the linearized dynamics near the critical exceptional point.
Topics & Concepts
Mesoscopic physicsPhysicsEntropy productionMesoscale meteorologyStatistical physicsCritical point (mathematics)Symmetry breakingCoupling (piping)Condensed matter physicsQuantum mechanicsMathematical analysisEngineeringMathematicsMeteorologyMechanical engineeringAdvanced Thermodynamics and Statistical MechanicsTheoretical and Computational PhysicsStatistical Mechanics and Entropy