Abstract
The renormalization group flow for σ-models with base space of dimension 1 or 2 is investigated. In two dimensions it is shown that the flow is singular towards the UV for a generic target space. In one dimension it is shown that there are IR fixed points coming from negatively curved symmetric spaces.
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Communicated by A. Jaffe
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Lott, J. Renormalization group flow for general σ-models. Commun.Math. Phys. 107, 165–176 (1986). https://doi.org/10.1007/BF01206956
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DOI: https://doi.org/10.1007/BF01206956