Fluctuation Relation for Heat

Details Fluctuation Relation for Heat Fluctuation Relation for Heat

2012-04-04

arxiv.org/abs/1204.1004v1

Physics

Condensed Matter

Statistical Mechanics

5 pages, 3 figure

Scientific paper

We present a fluctuation relation for heat dissipation in a nonequilibrium system. A nonequilibrium work is known to obey the fluctuation theorem in any time interval $t$. A heat, which differs from a work by an energy change, is shown to satisfy a modified fluctuation relation. Modification is brought by correlation between a heat and an energy change during nonequilibrium processes whose effect may not be negligible even in the $t\to\infty$ limit. The fluctuation relation is derived for overdamped Langevin equation systems, and tested in a linear diffusion system.

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