Mathematics – Differential Geometry
Scientific paper
2009-08-13
Rend.Sem.Mat.Univ.Politec.Torino.66:1-21,2008
Mathematics
Differential Geometry
19 pages
Scientific paper
In recent work N. Hitchin introduced the concept of "generalised geometry". The key feature of generalised structures is that that they can be acted on by both diffeomorphisms and 2-forms, the so-called $B$-fields. In this lecture, we give a basic introduction and explain some of the fundamental ideas. Further, we discuss some examples of generalised geometries starting from the usual notion of a Calabi-Yau manifold, as well as applications to string theory.
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