Topology changing T-dualities
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Mon, 09/02/2009 12:00 |
Jarah Evslin (Trieste) |
String Theory Seminar  |
L3 |
| We define an action of ordinary and Narain T-duality on an arbitrary torus bundle by applying Buscher and Narain's formulations patchwise. In general it changes the topology of the compactification manifold and its NS 3-form flux, for example in the case of a circle bundle it interchanges the Chern class with a pushforward of the flux. It nonetheless provides a candidate duality of the full string theory because it preserves several topological and geometric invariants such as the twisted K-theory in type II and the tadpole and supersymmetry conditions in non-Kahler heterotic compactifications. | |||