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arXiv · hep-th/9605124

Renormalization Group Flows in Sigma--Models Coupled to Two--Dimensional Dynamical Gravity

S. Penati·A. Santambrogio·D. Zanon
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Abstract

We consider a bosonic $\s$--model coupled to two--dimensional gravity. In the semiclassical limit, $c\rightarrow -\infty$, we compute the gravity dressing of the $\b$--functions at two--loop order in the matter fields. We find that the corrections due to the presence of dynamical gravity are {\em not} expressible simply in terms of a multiplicative factor as previously obtained at the one--loop level. Our result indicates that the critical points of the theory are nontrivially influenced and modified by the induced gravity.

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S. Penati, A. Santambrogio, D. Zanon. 1996-05-17. Renormalization Group Flows in Sigma--Models Coupled to Two--Dimensional Dynamical Gravity. https://doi.org/10.1016/s0550-3213(96)00510-x

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