Accurate eigenvalues of bounded oscillators
classification
🧮 math-ph
math.MP
keywords
eigenvaluesaccurateboundedapproachapproximationbelowcalculateconvergence
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We calculate accurate eigenvalues of a bounded oscillator by means of the Riccati--Pad\'e 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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