Abstract

We consider a simple model of a stochastic heat engine, which consists of a single Brownian particle moving in a one-dimensional periodically breathing harmonic potential. The overdamped limit is assumed. Expressions for the second moments (variances and covariances) of heat and work are obtained in the form of integrals, whose integrands contain functions satisfying certain differential equations. The results in the quasi-static limit are simple functions of the temperatures of hot and cold thermal baths. The coefficient of variation of the work is suggested to give an approximate probability for the work to exceed a given threshold. During the derivation, we get the expression of the cumulant-generating function.

Details

Title
Second moments of work and heat for a single-particle stochastic heat engine in a breathing harmonic potential
Author
Iida, Shinji 1 ; Negoro, Koki 1 ; Yamada, Kanta 1 

 Applied Mathematics and Informatics Course, Faculty of Advanced Science and Technology, Ryukoku University , Otsu, Shiga 520-2194 , Japan 
Publication year
2022
Publication date
Apr 2022
Publisher
Oxford University Press
e-ISSN
20503911
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3171492246
Copyright
© The Author(s) 2022. Published by Oxford University Press on behalf of the Physical Society of Japan. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.