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	Convex effective potential of O(N)-symmetric φ4 theory for large N
掲載誌名	正式名：Nuclear Physics B
巻・号・頁	479(3),663-682頁
著者・共著者	◎Hisamitsu Mukaida, Yujiro Shimada
発行年月	1996/02
概要	We obtain an effective potential of the O(N)-symmetric φ4 theory for large N starting with a finite lattice system and taking the thermodynamic limit with great care. In the thermodynamic limit, it is globally real-valued and convex in both the symmetric and the broken phases. In particular, it has a flat bottom in the broken phase.