Accurate eigenvalues of bounded oscillators
arXiv:0802.1483 · doi:10.1088/0031-8949/78/01/015003
Abstract
We calculate accurate eigenvalues of a bounded oscillator by means of the Riccati--Padé method that is based on a rational approximation to a regularized logarithmic derivative of the wavefunction. Sequences of roots of Hankel determinants approach the model eigenvalues from below with remarkable convergence rate.
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