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The Effective Action of W3 Gravity to All Orders

Jan de Boer, Jacob Goeree

hep-tharXiv:hep-th/9211107

Abstract

The effective action for chiral W3 gravity is studied. It is shown that the computation of the effective action can be reduced to that of a SL(3,) Wess-Zumino-Witten theory. If one assumes that the effective action for the Wess-Zumino-Witten model is identical to the WZW action up to multiplicative renormalizations, then the effective action for W3 gravity is, to all orders, given by a constrained WZW model. The multiplicative renormalization constants of the WZW model are discussed and it is analyzed which particular values of these constants are consistent with previous one-loop calculations, and which reproduce the KPZ formulas for gravity and their generalizations for W3 gravity.

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