An adjustable parameter is introduced into the formalism of the Rayleigh–Schrödinger perturbation theory to construct a controllable asymptotic series for the energy eigenvalues of a quantum anharmonic oscillator. Numerical results are presented, to second order in the perturbation expansion, for the ground state and the first eight excited states of the oscillator.
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© 1983 American Association of Physics Teachers.
1983
American Association of Physics Teachers
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