Generalized Hellmann-Feynman theorem for ensemble average expressed in the formalism of pure state expectation

DOI10.1007/S10773-011-0981-XzbMath1248.81046OpenAlexW2013888319MaRDI QIDQ436980

Chang-Chun Wang, Xian-Cai Wang, Ye-jun Xu, Hong-Yi Fan

Publication date: 17 July 2012

Published in: International Journal of Theoretical Physics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s10773-011-0981-x

zbMATH Keywords

von Neumann entropygeneralized Hellmann-Feynman theoremthermal vacuum state

Mathematics Subject Classification ID

Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other equations of quantum mechanics (81Q05) Measures of information, entropy (94A17)

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Cites Work

• Weyl ordering symbol method for studying Wigner function of the damping field
• Normally-Ordered Time Evolution Operator for Mass-Varying Harmonic Oscillator and Wigner Function of Squeezed Number State
• ON THE THERMO-INVARIANT COHERENT STATE IN THERMO FIELD DYNAMICS
• NEW APPLICATION OF THERMO FIELD DYNAMICS IN SIMPLIFYING THE CALCULATION OF WIGNER FUNCTIONS
• Forces in Molecules

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