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Open AccessArticle

Equilibrium States in Open Quantum Systems

Max Planck Institute for the Physics of Complex Systems, D-01187 Dresden, Germany
Entropy 2018, 20(6), 441; https://doi.org/10.3390/e20060441
Received: 29 March 2018 / Revised: 19 April 2018 / Accepted: 5 June 2018 / Published: 6 June 2018
(This article belongs to the Special Issue Coherence in Open Quantum Systems)
The aim of this paper is to study the question of whether or not equilibrium states exist in open quantum systems that are embedded in at least two environments and are described by a non-Hermitian Hamilton operator H . The eigenfunctions of H contain the influence of exceptional points (EPs) and external mixing (EM) of the states via the environment. As a result, equilibrium states exist (far from EPs). They are different from those of the corresponding closed system. Their wavefunctions are orthogonal even though the Hamiltonian is non-Hermitian. View Full-Text
Keywords: open quantum systems; non-Hermitian Hamilton operator; equilibrium state open quantum systems; non-Hermitian Hamilton operator; equilibrium state
MDPI and ACS Style

Rotter, I. Equilibrium States in Open Quantum Systems. Entropy 2018, 20, 441.

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