title: The stochastic thermodynamics of a rotating Brownian particle in a gradient flow.
abstract: We compute the entropy production engendered in the environment from a single Brownian particle which moves in a gradient flow, and show that it corresponds in expectation to classical near-equilibrium entropy production in the surrounding fluid with specific mesoscopic transport coefficients. With temperature gradient, extra terms are found which result from the nonlinear interaction between the particle and the non-equilibrated environment. The calculations are based on the fluctuation relations which relate entropy production to the probabilities of stochastic paths and carried out in a multi-time formalism.
authors.affiliation: 1] The Department of Physics Tsinghua University, 100084 Beijing, China [2] Collaborative Innovation Center of Quantum Matter, Beijing 100084, China.
authors.forename: Yueheng
authors.initials: Y
authors.lastname: Lan
authors.affiliation: 1] Dept. Computational Biology and ACCESS Linnaeus Centre, KTH-Royal Institute of Technology, 106 91 Stockholm, Sweden [2] Dept. Applied Physics and Dept. Information and Computer Science, Aalto University, Espoo, Finland.
authors.forename: Erik
authors.initials: E
authors.lastname: Aurell