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Feenberg scaling and higher‐order invariants in Rayleigh–Schrödinger perturbation theory
Author(s) -
Bhattacharyya Kamal
Publication year - 1982
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560210511
Subject(s) - scaling , hamiltonian (control theory) , mathematical physics , physics , perturbation (astronomy) , invariant (physics) , perturbation theory (quantum mechanics) , scale invariance , quantum mechanics , statistical physics , mathematics , mathematical optimization , geometry
It is shown that the determination of a unique scaling parameter, based on scale‐invariant forms for energy in the scaled zero‐order Hamiltonian approach of Feenberg, is not possible because the higher‐order invariants themselves are nonunique.