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Peter Bouwknegt
Title: Spherical T-duality and M-geometry
[pdf]
Abstract: T-duality is an equivalence of String Theories on manifolds which
are circle (or more generally, torus) bundles equipped with a background
flux. Mathematically it provides an isomorphism for twisted
cohomology and K-theory for these manifolds. In this talk I will briefly
review T-duality for circle bundles, and then discuss a recent generalisation
to 3-sphere bundles, as well as the associated (generalised) geometry.
This talk is based on joint work with Jarah Evslin and Mathai Varghese
[arXiv:1405.5844/1409.1296/1502.04444], and work in progress with Brano Jurco
and Jan Vysoky.
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