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

AuthorsColombo, Eduardo H.; Defaveri, L. A. C. A.; Anteneodo, Celia
Issue DateSep-2019
PublisherAmerican Physical Society
CitationPhysical Review - Section E - Statistical Nonlinear and Soft Matter Physics 100(3): 032118 (2019)
AbstractChains 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.
Publisher version (URL)http://doi.org/10.1103/PhysRevE.100.032118
Identifiersdoi: 10.1103/PhysRevE.100.032118
e-issn: 2470-0053
issn: 2470-0045
Appears in Collections:(IFISC) Artículos
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