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Testing fixed points in the 2D O(3) non-linear sigma model

B. Alles, G. Cella, M. Dilaver, Y. Gunduc

hep-latarXiv:hep-lat/9808003

Abstract

Using high statistic numerical results we investigate the properties of the O(3) non-linear 2D sigma-model. Our main concern is the detection of an hypothetical Kosterlitz-Thouless-like (KT) phase transition which would contradict the asymptotic freedom scenario. Our results do not support such a KT-like phase transition.

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