Equilibrium States in Open Quantum Systems

Ingrid Rotter
2018 Entropy  
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
more » ... thogonal even though the Hamiltonian is non-Hermitian.
doi:10.3390/e20060441 pmid:33265531 fatcat:iavcpq6bh5a2vnjkfadxyqfw7y