Optimized Perturbation Methods for the Free Energy of the Anharmonic Oscillator

Details Optimized Perturbation Methods for the Free Energy of the Anharmonic Oscillator Optimized Perturbation Methods for the Free Energy of the Anharmonic Oscillator

1993-11-24

arxiv.org/abs/hep-th/9311145v1

Phys.Lett. A186 (1994) 375-381

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, preprint

Scientific paper

10.1016/0375-9601(94)90697-1

Two possibile applications of the optimized expansion for the free energy of the quantum-mechanical anharmonic oscillator are discussed. The first method is for the finite temperature effective potential; the second one, for the classical effective potential. The results of both methods show a quick convergence and agree well with the exact free energy in the whole range of temperatures. Postscript figures are available under request to AO email ROZYNEK@FUW.EDU.PL

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