Entropy and efficiency of a molecular motor model

Details Entropy and efficiency of a molecular motor model Entropy and efficiency of a molecular motor model

2009-06-23

arxiv.org/abs/0906.4222v2

J. Phys. A: Math. Theor. 42 (2009) 445003

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

In this paper we investigate the use of path-integral formalism and the concepts of entropy and traffic in the context of molecular motors. We show that together with time-reversal symmetry breaking arguments one can find bounds on efficiencies of such motors. To clarify this techinque we use it on one specific model to find both the thermodynamic and the Stokes efficiencies, although the arguments themselves are more general and can be used on a wide class of models. We also show that by considering the molecular motor as a ratchet, one can find additional bounds on the thermodynamic efficiency.

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