2004/03/31 by Melanie Becker, Keshav Dasgupta, Anke Knauf +1 · 1 citation
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2004.09.020
published as Nucl.Phys. B702 (2004) 207-268 · Harvmac, 79 pages, 1 .eps figure; v4: Text further expanded with additional results, typos corrected and references added
arxiv created 2005/12/02 · arxiv updated 2009/12/01
We construct a duality cycle which provides a complete supergravity description of geometric transitions in type II theories via a flop in M-theory. This cycle connects the different supergravity descriptions before and after the geometric transitions. Our construction reproduces many of the known phenomena studied earlier in the literature and allows us to describe some new and interesting aspects in a simple and elegant fashion. A precise supergravity description of new torsional manifolds that appear on the type IIA side with branes and fluxes and the corresponding geometric transition are obtained. A local description of new G2 manifolds that are circle fibrations over non-Kahler manifolds is presented.