Spacetime supersymmetry in backgrounds
arXiv:hep-th/9904040 · doi:10.1016/S0370-2693(99)00623-1
Abstract
We construct string target spacetimes with AdS_3 x X geometry, which have an N=2 spacetime superconformal algebra. X is found to be a U(1) fibration over a manifold which is a target for an N=2 worldsheet conformal field theory. We emphasize theories with free field realizations where in principle it is possible to compute the full one-particle string spectrum.
13 pages Latex; references added
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