Fixed-point perturbation theory and the potential r2+ λr2/(1+gr2). II. Construction of the solutions
- 21 December 1984
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 17 (18) , 3449-3458
- https://doi.org/10.1088/0305-4470/17/18/015
Abstract
For pt.I see ibid., vol.17, p.3441, 1984. Constructs the asymptotic power-series expansions of the Green function and wavefunctions for the lambda r2/(1+gr2) anharmonicity oscillator. As a new form of the fixed-point perturbative formalism, the method may be extended to any band-matrix Hamiltonian in principle-the results illustrate its algebraic flexibility as well as a quick numerical convergence.Keywords
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