The Exact Tachyon Beta-Function for the Wess-Zumino-Witten Model
classification
✦ hep-th
keywords
modeltachyonbetaexactfunctionwess-zumino-wittenbeta-functioncalculating
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We derive an exact expression for the tachyon $\beta$-function for the Wess-Zumino-Witten model. We check our result up to three loops by calculating the three-loop tachyon $\beta$-function for a general non-linear $\sigma$-model with torsion, and then specialising to the case of the WZW model.
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