Renormalization-Group Resummation of a Divergent Series of the Perturbative Wave Functions of Quantum Systems
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概要
- 論文の詳細を見る
The perturbative renormalization group (RG) equation is applied to resum a divergent series of perturbative wave functions of a quantum anharmonic oscillator. It is found that the resummed series gives the cumulant of the naive perturbation series. It is shown that a reorganization of the resummed series reproduce the correct asymptotic form of the wave function at x → ∞ when the perturbation expansion is stopped at the fourth order. A brief comment is given on the relation between the present method and the delta-expansion method, which is based on a kind of nonperturbative RG equation.
- 理論物理学刊行会の論文
- 1998-10-14
著者
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KUNIHIRO Teiji
Faculty of Natural Science, Ryukoku University
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Kunihiro T
Yukawa Institute For Theoretical Physics Kyoto University:(present Office)department Of Physics Kyot
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Kunihiro Teiji
Faculty Of Natural Science Ryukoku University
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