On the Hellmann-Feynman theorem for statistical averages
classification
🧮 math-ph
math.MP
keywords
averageshellmann-feynmanstatisticaltheoremapplicationcalculationdegeneratederivatives
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We discuss the Hellmann-Feynman theorem for degenerate states and its application to the calculation of the derivatives of statistical averages with respect to external parameters.
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