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The Exact Tachyon Beta-Function for the Wess-Zumino-Witten Model

I. Jack, D. R. T. Jones

hep-tharXiv:hep-th/9310029

Abstract

We derive an exact expression for the tachyon β-function for the Wess-Zumino-Witten model. We check our result up to three loops by calculating the three-loop tachyon β-function for a general non-linear σ-model with torsion, and then specialising to the case of the WZW model.

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