Efficiency and Fluctuation in Tight-Coupling Model of Molecular Motor

Abstract

A simple tight-coupling model of a molecular chemical engine is proposed. The efficiency of the chemical engine and its average velocity can be explicitly calculated. The diffusion constant is evaluated approximately using the fluctuation theorem. Langevin simulations with stochastic boundary conditions are performed and the numerical results are compared with theoretical calculations.

arXiv comment6 Pages, 4 figures

References in corpus (5)

• Brownian motors: noisy transport far from equilibrium
• Dynamical Ensembles in Nonequilibrium Statistical Mechanics
• Energy Transduction of Isothermal Ratchets: Generic Aspects and Specific Examples Close to and Far from Equilibrium
• Effective temperature in nonequilibrium steady states of Langevin systems with a tilted periodic potential
• Molecular Chemical Engines: Pseudo-Static Processes and the Mechanism of Energy Transduction

Cited by in corpus (4)

• Stochastic thermodynamics, fluctuation theorems, and molecular machines
• Non-equilibrium fluctuations and mechanochemical couplings of a molecular motor
• Generalized Einstein Relation for Brownian Motion in Tilted Periodic Potential
• Efficiency of Energy Transduction in a Molecular Chemical Engine