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Strong-coupling expansion for the anharomonic oscillators −d2/dx 2+x 2+λx 2N

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Il Nuovo Cimento B (1971-1996)

Summary

A perturbation expansion based on a modified and scaled harmonic oscillator combined with Padé extrapolation techniques has been used to determine the expansion of the ground-state energy in fractional and negative powers of the coupling constant, valid for large values of λ.

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Author notes

  1. M. A. Solis

    Present address: Instituto de Física, UNAM, Apartado Postal 20-364, 01000, México, D.F., México

Authors and Affiliations

  1. Departamento de Física Atómica y Nuclear, Universidad de Valencia Estudi General, Avda. Dr. Moliner 50, 46100, Burjasot Valencia, Spain

    R. Guardiola & M. A. Solis

  2. Departamento de Física Teórica, Universidad de Valencia Estudi General IFIC, Centre Mixt Universitat de Valencia-CSIC, Avda. Dr. Moliner 50, 46100, Burjassot, Valencia, Spain

    J. Ros

Authors
  1. R. Guardiola
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  2. M. A. Solis
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  3. J. Ros
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Guardiola, R., Solis, M.A. & Ros, J. Strong-coupling expansion for the anharomonic oscillators −d2/dx 2+x 2+λx 2N . Nuov Cim B 107, 713–724 (1992). https://doi.org/10.1007/BF02723178

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  • DOI: https://doi.org/10.1007/BF02723178

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