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Role of the nature of noise in the thermal conductance of mechanical systems (Articolo in rivista)

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Role of the nature of noise in the thermal conductance of mechanical systems (Articolo in rivista) (literal)

Anno

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Alternative label

Welles A. M. Morgado (1); Sílvio M. Duarte Queirós (2) (2012)
Role of the nature of noise in the thermal conductance of mechanical systems
in Physical review. E, Statistical, nonlinear, and soft matter physics (Print)
(literal)

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1) Department of Physics, Pontifícia Universidade Católica do Rio de Janeiro and National Institute of Science and Technology for Complex Systems, Rua Marquês de São Vicente 225, Gávea, CEP 22453-900 RJ, Rio de Janeiro, Brazil 2) Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Via dei Taurini 19, 00158 Roma, Italy (literal)

Titolo

Role of the nature of noise in the thermal conductance of mechanical systems (literal)

Abstract

Focusing on a paradigmatic small system consisting of two coupled damped oscillators, we survey the role of the Levy-Ito nature of the noise in the thermal conductance. For white noises, we prove that the Levy-Ito composition (Lebesgue measure) of the noise is irrelevant for the thermal conductance of a nonequilibrium linearly coupled chain, which signals the independence of mechanical and thermodynamical properties. In contrast, for the nonlinearly coupled case, the two types of properties mix and the explicit definition of the noise plays a central role. (literal)

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