On the Extensions of Virial and Feynman - Hellman Theorem

Pratyusha Biswas Deb | S. Brajamani (Deceased) | H.C. Mohanto | Soumya Das | P. S. Majumdar

Abstract: In the present work off diagonal and higher order extensions of Feynman-Hellman theorem is studied Rayleigh-Schrodinger perturbation theory for the degenerate case is redefined using a new technique. We also consider off-diagonal extension of quantum mechanical virial theorem by considering the case of linear harmonic oscillator.

Keywords: Rayleigh-Schrodinger perturbation theory, Feynman-Hellman theorem, quantum mechanical virial theorem, linear harmonic oscillator

Edition: Volume 11 Issue 2, February 2022,

Pages: 437 - 438