Work

Partial Entropy production of active particles with hidden states in potentials

Year: 2026

Type: preprint

Abstract: Partially observed stochastic systems can appear (almost) time-reversal symmetric while in fact operating far from equilibrium. The present work extends the perturbative framework introduced in [Phys. Rev. Lett. 136, 198302 (2026)] to calculate in a generic confining potential the partial entropy production, which quantifies the time-reversal asymmetry of a generic active particle with hidden self-propulsion. Focusing on the harmonic case, we apply our framework to reproduce an exact result for the partial entropy production rate of an active Ornstein-Uhlenbeck particle and to derive the partial entropy production rate of a run-and-tumble particle.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2605.29201

Authors: Knight, Jacob, Pruessner, Gunnar

Institution: Imperial College London

Language: English

Topic: Advanced Thermodynamics and Statistical Mechanics

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Engineering and Physical Sciences Research Council

Award: Thermodynamics of Microscopic Systems far from Equilibrium

OpenAlex ID: W7162805111

Cites: 2

Cited by:

Related to: 10