Highly accurate calculation of the real and complex eigenvalues of one-dimensional anharmonic oscillators
arXiv:1511.08799 · doi:10.14311/AP.2017.57.0391
Abstract
We draw attention on the fact that the Riccati-Padé method developed some time ago enables the accurate calculation of bound-state eigenvalues as well as of resonances embedded either in the continuum or in the discrete spectrum. We apply the approach to several one-dimensional models that exhibit different kind of spectra. In particular we test a WKB formula for the imaginary part of the resonance in the discrete spectrum of a three-well potential.
arXiv admin note: text overlap with arXiv:1411.2089 by other authors
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