The Rayleigh Schro dinger perturbation series for the energy eigenvalue of an anharmonic oscillator defined by the Hamiltonian H (m) (;)=p^2 +x^2+;x^2 m with m=2, 3, 4, .. . diverges quite strongly for every ;{0 and has to summed to produce numerically useful results. However, a divergent weak coupl
Convergence radii of the perturbation expansions for the ground-state energies of finite Hubbard models
✍ Scribed by Katsufumi Hashimoto; Jiří Čížek; Josef Paldus
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 452 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0020-7608
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