Inattainability of Carnot efficiency in the Brownian heat engine
classification
❄️ cond-mat.stat-mech
cond-mat.soft
keywords
heatbrowniancarnotefficiencyengineinattainabilityanalysisasymptotic
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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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