Making sense of nonequilibrium current fluctuations: A molecular motor example

2023/06/02 by David Andrieux, Andrieux, David
Engineering · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Molecular Junctions and Nanostructures #Spectroscopy and Quantum Chemical Studies #Statistical Mechanics (cond-mat.stat-mech)

paper · pdf · doi:10.48550/arxiv.2306.01445

openalex publication_date 2023/06/02 · openalex created_date 2023/06/07 · openalex updated_date 2026/07/28

Abstract

The nonequilibrium response and fluctuations of Markovian systems, both near and far from equilibrium, are best understood by varying their parameters along dynamical equivalence classes. In this note, I illustrate this approach for an analytically solvable molecular motor toy model.

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• Nonequilibrium Fluctuation-Response Relations for State Observables
• Failure of the fluctuation-dissipation relation to ensure equilibrium
• Exact method for calculating the current fluctuations and nonlinear response of Markovian dynamics
• Non-monotonic skewness of currents in non-equilibrium steady states