ムカイダ　ヒサミツ   MUKAIDA Hisamitsu   向田　寿光    所属   埼玉医科大学  医学部 教養教育    職種   教授
論文種別	学術雑誌(原著)
言語種別	英語
査読の有無	査読なし
表題	Necessity of a finite-size term in the WZW model
掲載誌名	正式名：Physics Letters B
巻・号・頁	244(2),241-244頁
著者・共著者	Satoshi Iso, Chigak Itoi, ◎Hisamitsu Mukaida
発行年月	1990/07
概要	Employing a coherent state path integral method, we derive an action from the Kac-Moody algebra of level k. We show that it is the light-cone WZW action with a finite-size term. The current operators also contain a finite-size term and are shown to satisfy the original commutation relations. The finite term is necessary to derive the exact phase space and also to understand the constraint 0\leq 2J \leq k (for SU (2)) in terms of the path integral language.