On the Hellmann-Feynman theorem in statistical mechanics

Abstract

In this paper we develop the Hellmann-Feynman theorem in statistical mechanics without resorting to the eigenvalues and eigenvectors of the Hamiltonian operator. Present approach does not require the quantum-mechanical version of the theorem at $T=0$ and bypasses any discussion about degenerate states.

References in corpus (1)

• On the Hellmann-Feynman theorem for degenerate states

Cited by in corpus (1)

• Evaluation of two-particle properties within finite-temperature self-consistent one-particle Green's function methods: theory and application to GW and GF2