Inattainability of Carnot efficiency in the Brownian heat engine

Details Inattainability of Carnot efficiency in the Brownian heat engine Inattainability of Carnot efficiency in the Brownian heat engine

2000-08-11

arxiv.org/abs/cond-mat/0008176v1

Physics

Condensed Matter

Statistical Mechanics

5 pages, to appear in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.62.6021

We discuss the reversibility of Brownian heat engine. We perform asymptotic analysis of Kramers equation on B\"uttiker-Landauer system and show quantitatively that Carnot efficiency is inattainable even in a fully overdamping limit. The inattainability is attributed to the inevitable irreversible heat flow over the temperature boundary.

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