Perturbative Expansion around the Gaussian Effective Action: The Background Field Method

Details Perturbative Expansion around the Gaussian Effective Action: The Background Field Method Perturbative Expansion around the Gaussian Effective Action: The Background Field Method

1997-07-02

arxiv.org/abs/hep-th/9707035v3

Phys.Rev. D56 (1997) 6573-6578

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, 3 eps figures, uses RevTeX and epsf. Errors in Table 1 are corrected and new references are added

Scientific paper

10.1103/PhysRevD.56.6573

We develop a systematic method of the perturbative expansion around the
Gaussian effective action based on the background field method. We show, by
applying the method to the quantum mechanical anharmonic oscillator problem,
that even the first non-trivial correction terms greatly improve the Gaussian
approximation.

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