Assessing the role of initial correlations in the entropy production rate for nonequilibrium harmonic dynamics

Giorgio Zicari*, Matteo Brunelli, Mauro Paternostro

*Corresponding author for this work

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Abstract

Entropy production provides a general way to state the second law of thermodynamics for nonequilibrium scenarios. In open quantum system dynamics, it also serves as a useful quantifier of the degree of irreversibility. In this work we shed light on the relation between correlations, initial preparation of the system, and non-Markovianity by studying a system of two harmonic oscillators independently interacting with their local baths. Their dynamics, described by a time-local master equation, is solved to show, both numerically and analytically, that the global purity of the initial state of the system influences the behavior of the entropy production rate and that the latter depends algebraically on the entanglement that characterizes the initial state.
Original languageEnglish
Article number043006
Number of pages10
JournalPhysical Review Research
Volume2
Issue number4
DOIs
Publication statusPublished - 01 Oct 2020

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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