Heat fluctuations in overdamped non-isothermal processes

Pedro V. Paraguassú, Lucianno Defaveri, Welles A.M. Morgado

Research output: Contribution to journalArticlepeer-review

Abstract

In stochastic thermodynamics, non-isothermal processes are essential for most Brownian thermal machines. In this paper, we investigate how the inclusion of a temperature protocol affects heat and its fluctuations. The protocol needs to satisfy certain constraints to allow the particle to be stationary at the end of the process. We investigate the fluctuations of heat when there is a non-isothermal process for the non-stationary final velocity case, and the overdamped harmonic and quartic potential. Our results are consistent with thermodynamics and demonstrates the importance of adding a kinetic energy term to the equations in overdamped systems.

Original languageEnglish
Article number22
JournalEuropean Physical Journal B
Volume96
Issue number2
DOIs
StatePublished - Feb 2023

Bibliographical note

Funding Information:
This work is supported by the Brazilian agencies CAPES and CNPq. PVP would like to thank FAPERJ for his current PhD fellowship. This study was financed in part by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001.

Funding Information:
This work is supported by the Brazilian agencies CAPES and CNPq. PVP would like to thank FAPERJ for his current PhD fellowship. This study was financed in part by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001.

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature.

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