On the Hellmann-Feynman theorem for statistical averages

2012/11/26 by Francisco M. Fernández, Fernández, Francisco M.
Mathematics · Physics and Astronomy · #Advanced Mathematical Theories and Applications #FOS: Physical sciences #Mathematical Physics (math-ph) #Quantum Mechanics and Applications #Statistical Mechanics and Entropy #math-ph #math.MP

paper · pdf · doi:10.48550/arxiv.1211.5958

arxiv created 2012/11/26 · openalex publication_date 2012/11/26 · arxiv updated 2012/11/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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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