Heat flux direction controlled by power-law oscillators under non-Gaussian fluctuations

E. H. Colombo, L. A.C.A. Defaveri, C. Anteneodo

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Chains of particles coupled through anharmonic interactions and subject to non-Gaussian baths can exhibit paradoxical outcomes such as heat currents flowing from colder to hotter reservoirs. Aiming to explore the role of generic nonharmonicities in mediating the contributions of non-Gaussian fluctuations to the direction of heat propagation, we consider a chain of power-law oscillators, with interaction potential V(x) |x|α, subject to Gaussian and Poissonian baths at its ends. Performing numerical simulations and addressing heuristic considerations, we show that a deformable potential has bidirectional control over heat flux.

Original languageEnglish
Article number032118
JournalPhysical Review E
Volume100
Issue number3
DOIs
StatePublished - 12 Sep 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 American Physical Society.

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