2010年3月
Apparently Noninvariant Terms of U(N)×U(N) Nonlinear Sigma Model in the One-Loop Approximation(Particles and Fields)
Progress of theoretical physics
- ,
- ,
- 巻
- 123
- 号
- 3
- 開始ページ
- 475
- 終了ページ
- 498
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1143/PTP.123.475
- 出版者・発行元
- 理論物理学刊行会
We show how the Apparently Noninvariant Terms (ANTs), which emerge in perturbation theory of nonlinear sigma models, are consistent with the nonlinearly realized symmetry by employing the Ward-Takahashi identity (in the form of an inhomogeneous Zinn-Justin equation). In the literature the discussions on ANTs are confined to the SU(2) case. We generalize them to the U (N) case and demonstrate explicitly at the one-loop level that despite the presence of divergent ANTs in the effective action of the "pions", the symmetry is preserved.
- リンク情報
- ID情報
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- DOI : 10.1143/PTP.123.475
- ISSN : 0033-068X
- CiNii Articles ID : 110007573227
- Web of Science ID : WOS:000277381100005