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Title:
Generalised geometry and supersymmetric spacetimes
Speaker:
Abstract:
String theory, as a theory of extended rather than pointlike objects, endows spacetime with remarkable and unexpected symmetries, which in turn often suggest new structures and relations in geometry. We start by introducing some simple aspects of one such symmetry - T-duality, the subject of this week's workshop. We then turn to the problem of characterising generic supersymmetric spactimes, which are the natural string generalisations of special holonomy manifolds. We explain how they correspond to torsion-free structures in an extension of Hitchin and Gualtieri's "generalised geometry", a construction motivated by T-duality.
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