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Construction of the Strong Coupling Expansion for the Ground State Energy of the Quartic, Sextic, and Octic Anharmonic Oscillator via a Renormalized Strong Coupling Expansion

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DOI: 10.1103/PhysRevLett.77.2859
OAI: oai:inspirehep.net:439108
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INSPIRE-HEP
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Abstract

A recently developed renormalized strong coupling expansion [E. J. Weniger, Ann. Phys. (N.Y.) 246, 133 (1996)] is employed to compute the coefficients of the standard strong coupling expansion for the ground state energy of the quartic, sextic, and octic anharmonic oscillator. This approach is very simple, both conceptually and technically, and produces more accurate results than previously used techniques which were in most cases applied to the quartic case only.

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