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Variational perturbation theory. Theϕ 2k oscillator

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Variational perturbation theory is used to study the anharmonicϕ 2k oscillator in the strong coupling limit. Nonperturbative expressions are obtained for the vacuum energy, the Green's function, and the effective potential.

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Authors
  1. L. D. Korsun
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  2. A. N. Sisakyan
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  3. I. L. Solovtsov
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Additional information

Joint Institute for Nuclear Research, Dubna. Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 90, No. 1, pp. 37–54, January, 1992.

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Korsun, L.D., Sisakyan, A.N. & Solovtsov, I.L. Variational perturbation theory. Theϕ 2k oscillator. Theor Math Phys 90, 22–34 (1992). https://doi.org/10.1007/BF01018815

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