Two dimensional non-linear sigma models as a limit of the linear sigma models

Details Two dimensional non-linear sigma models as a limit of the linear sigma models Two dimensional non-linear sigma models as a limit of the linear sigma models

2004-08-03

arxiv.org/abs/hep-th/0408025v2

Prog.Theor.Phys. 113 (2005) 1377-1390

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 3 figures, LaTeX, revised with an addition of Appendix B

Scientific paper

10.1143/PTP.113.1377

We show how to obtain the O(N) non-linear sigma model in two dimensions as a strong coupling limit of the corresponding linear sigma model. In taking the strong coupling limit, the squared mass parameter must be given a specific coupling dependence that assures the finiteness of the physical mass scale. The relation discussed in this paper, which applies to the renormalized theories as opposed to the regularized theories, is an example of a general relation between the linear and non-linear models in two and three dimensions.

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