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 language | English |
|---|---|
| Article number | 032118 |
| Journal | Physical Review E |
| Volume | 100 |
| Issue number | 3 |
| DOIs | |
| State | Published - 12 Sep 2019 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2019 American Physical Society.
Funding
We are grateful to Welles A. M. Morgado for initial discussions. This work is partially funded by the Spanish Research Agency, through Grants No. ESOTECOS FIS2015-63628-C2-1-R (AEI/FEDER, EU) and No. MDM-2017-0711 from the Maria de Maeztu Program for units of Excellence in R&D (EHC), and by the Brazilian research agencies Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), and Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ).
| Funders | Funder number |
|---|---|
| Spanish Research Agency | FIS2015-63628-C2-1-R |
| European Commission | MDM-2017-0711 |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | |
| Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
| Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro | |
| European Regional Development Fund | |
| Agencia Estatal de Investigación |