Abstract
We present a first instance of an exact supersymmetric string vacuum in curved space-time. It corresponds to the Freedman-Gibbons electrovac solution to one version of N=4 supergravity, with N=2 space-tme supersymmetry. The conformal theory includes a Wess-Zumino-Witten model on the SU (1,1) group manifold.
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