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Open AccessFeature PaperArticle

Kovacs-Like Memory Effect in Athermal Systems: Linear Response Analysis

Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain
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Entropy 2017, 19(10), 539; https://doi.org/10.3390/e19100539
Received: 19 September 2017 / Revised: 10 October 2017 / Accepted: 11 October 2017 / Published: 13 October 2017
(This article belongs to the Special Issue Thermodynamics and Statistical Mechanics of Small Systems)
We analyze the emergence of Kovacs-like memory effects in athermal systems within the linear response regime. This is done by starting from both the master equation for the probability distribution and the equations for the physically-relevant moments. The general results are applied to a general class of models with conserved momentum and non-conserved energy. Our theoretical predictions, obtained within the first Sonine approximation, show an excellent agreement with the numerical results. Furthermore, we prove that the observed non-monotonic relaxation is consistent with the monotonic decay of the non-equilibrium entropy. View Full-Text
Keywords: linear response; Kovacs effect; athermal system; master equation; H-functional linear response; Kovacs effect; athermal system; master equation; H-functional
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Plata, C.A.; Prados, A. Kovacs-Like Memory Effect in Athermal Systems: Linear Response Analysis. Entropy 2017, 19, 539.

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