Modern Physics Letters B

CALCULATION OF ENTROPY FOR SOME COUPLED OSCILLATORS BY USING THE GENERALIZED HELLMANN–FEYNMAN THEOREM

Hong-Yi Fan, Xue-xiang Xu, Liyun Hu

Published Jan 30, 2010• 4 citations

Abstract

The entropies of several typical coupled bosonic oscillators are calculated by virtue of the generalized Hellmann–Feynman theorem (GHFT). The relation between GHFT and entropy-variation is construct by using von Neumann entropy, which provides us with a new approach for deriving entropy of some complicated systems.

DOI: 10.1142/s0217984910022342

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