Entropy production and its large deviations in an active lattice gas

Abstract

Active systems are characterized by a continuous production of entropy at steady state. We study the statistics of entropy production within a lattice-based model of interacting active particles that is capable of motility-induced phase separation. Exploiting a recent formulation of the exact fluctuating hydrodynamics for this model, we provide analytical results for its entropy production statistics in both typical and atypical (biased) regimes. This complements previous studies of the large deviation statistics of entropy production in off-lattice active particle models that could only be addressed numerically. Our analysis uncovers an unexpectedly intricate phase diagram, with five different phases arising (under bias) within the parameter regime where the unbiased system is in its homogeneous state. Notably, we find the concurrence of first order and second order nonequilibrium phase transition curves at a bias-induced tricritical point, a feature not yet reported in previous studies of active systems.

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Cited by in corpus (17)

• Classical Nucleation Theory for Active Fluid Phase Separation
• Thermodynamics of active matter: Tracking dissipation across scales
• Thermodynamically consistent flocking: From discontinuous to continuous transitions
• Tricritical behavior in dynamical phase transitions
• Current fluctuations in an interacting active lattice gas
• Generalized disorder averages and current fluctuations in run and tumble particles
• Confined run and tumble particles with non-Markovian tumbling statistics
• Quantifying dissipation in flocking dynamics: When tracking internal states matters
• Exact hydrodynamics and onset of phase separation for an active exclusion process
• Entropy production rate in thermodynamically consistent flocks
• Nonequilibrium steady state of Brownian motion in an intermittent potential
• Bringing together two paradigms of non-equilibrium: Fragile versus robust aging in driven glassy systems
• Irreversibility in Non-reciprocal Chaotic Systems
• Effect of initial conditions on current fluctuations in non-interacting active particles
• Fluctuating Hydrodynamics Describes Transport in Cellular Aggregates
• Tracer dynamics in the active random average process
• Full distribution of the ground-state energy of potentials with weak disorder