# $SL(2,R)xSU(2)-R^2$ string model in curved spacetime and exact conformal results

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Pursuing further the recent methods in the algebraic Hamiltonian approach to gauged WZW models, we apply them to the bosonic SL(2,R) X SU(2)-R^2 model recently investigated by Nappi and Witten. We find the global space and compute the conformally exact metric and dilaton fields to all orders in the $1-k$ expansion. The semiclassical limit \$k-,k\to

Author: I. Bars; K. Sfetsos

Source: https://archive.org/