paper

Variational perturbation expansion for strong-coupling coefficients of the anharmonic oscillator

arXiv:quant-ph/9502019 · doi:10.1103/PhysRevLett.75.2787

Abstract

As an application of a recently developed variational perturbation theory we find the first 22 terms of the convergent strong-coupling series expansion for the ground state energy of the quartic anharmonic oscillator.

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