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Numerical estimates of the convergence of the Rayleigh-Schrödinger perturbation expansions for the energy levels of various models of the benzene molecule

✍ Scribed by Alain Pellegatti; Jiří Čížek; Josef Paldus

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
223 KB
Volume
21
Category
Article
ISSN
0020-7608

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✦ Synopsis

Abstract

We estimate radii of convergence of the Rayleigh‐Schrödinger perturbation expansions for various energy levels of the π‐electron model of the benzene molecule, described by the Hubbard Hamiltonian in both weakly and strongly correlated limits. They are determined using a “generalized” Cauchy criterion applied to the numerically determined coefficients of the pertinent expansions.

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