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TITLE Relative Entropy as a Measure of Difference between Hermitian and Non-Hermitian Systems
KIAS AUTHORS Kim, Jaewan,Jeong, Kabgyun
JOURNAL ENTROPY, 2020
ARCHIVE  
ABSTRACT We employ the relative entropy as a measure to quantify the difference of eigenmodes between Hermitian and non-Hermitian systems in elliptic optical microcavities. We have found that the average value of the relative entropy in the range of the collective Lamb shift is large, while that in the range of self-energy is small. Furthermore, the weak and strong interactions in the non-Hermitian system exhibit rather different behaviors in terms of the relative entropy, and thus it displays an obvious exchange of eigenmodes in the elliptic microcavity.
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