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arXiv · 1201.4525

Modified fluctuation-dissipation and Einstein relation at non-equilibrium steady states

Debasish Chaudhuri·Abhishek Chaudhuri
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Abstract

Starting from the pioneering work of G. S. Agarwal [Zeitschrift für Physik 252, 25 (1972)], we present a unified derivation of a number of modified fluctuation-dissipation relations (MFDR) that relate response to small perturbations around non-equilibrium steady states to steady-state correlations. Using this formalism we show the equivalence of velocity forms of MFDR derived using continuum Langevin and discrete master equation dynamics. The resulting additive correction to the Einstein relation is exemplified using a flashing ratchet model of molecular motors.

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Debasish Chaudhuri, Abhishek Chaudhuri. 2012-01-22. Modified fluctuation-dissipation and Einstein relation at non-equilibrium steady states. https://doi.org/10.1103/physreve.85.021102

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