RG flows of integrable σ-models and the twist function
Keyword(s):
Abstract In the study of integrable non-linear σ-models which are assemblies and/or deformations of principal chiral models and/or WZW models, a rational function called the twist function plays a central rôle. For a large class of such models, we show that they are one-loop renormalizable, and that the renormalization group flow equations can be written directly in terms of the twist function in a remarkably simple way. The resulting equation appears to have a universal character when the integrable model is characterized by a twist function.
2001 ◽
Vol 16
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pp. 2119-2124
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1995 ◽
Vol 10
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pp. 2703-2732
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2011 ◽
Vol 369
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pp. 2735-2758
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2001 ◽
Vol 504
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