title: Modified fluctuation-dissipation and Einstein relation at nonequilibrium steady states.
abstract: Starting from the pioneering work of Agarwal [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 nonequilibrium 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.
authors.affiliation: FOM Institute for Atomic and Molecular Physics, Science Park 104, NL-1098XG Amsterdam, The Netherlands. d.chaudhuri@amolf.nl
authors.forename: Debasish
authors.initials: D
authors.lastname: Chaudhuri
authors.forename: Abhishek
authors.initials: A
authors.lastname: Chaudhuri
mesh_terms: D003198:Computer Simulation; D004735:Energy Transfer; D008956:Models, Chemical; D008958:Models, Molecular; D020409:Molecular Motor Proteins / Q000737:chemistry*; D009038:Motion
chemical_list: D020409:Molecular Motor Proteins