A Construction of an Effective Hamiltonian from Feynman Diagrams : Application to the Light-Front Yukawa Model
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概要
- 論文の詳細を見る
We study a similarity transformation to construct an effective Hamiltonian systematically, which does not contain particle-number-changing interactions, by means of the Fukuda-Sawada-Taketani-Okubo method. We show that such a Hamiltonian can be constructed from Feynman diagrams and give rules for constructing it in the light-front Yukawa model. We prove that it is renormalized by the familiar covariant perturbative renormalization procedure. It is very advantageous that the effective Hamiltonian can be obtained from our rules immediately. We also numerically diagonalize it to second order in the coupling constant as an exercise.
- 理論物理学刊行会の論文
- 2001-07-25
著者
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山本 裕樹
慶應義塾大学日吉物理学教室
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山本 裕樹
東北公益文化大
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山本 裕樹
九大・理
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Yamamoto Yuki
Department Of Dermatology Wakayama Medical University
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YAMAMOTO Yuichi
Department of Physics, School of Science, Tohyo Metropolitan University
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山本 裕樹
Department Of Community Service And Science Tohoku University Of Community Services And Science
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Yamamoto Yuki
Department Of Biology Faculty Of Science Okayama University
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Yamamoto Yuki
Department Of Basic Veterinary Science The United Graduate School Of Veterinary Sciences Gifu University
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YAMAMOTO Yuki
Department of Physics, Kyushu University
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