New families of interpolating type IIB backgrounds

Details New families of interpolating type IIB backgrounds New families of interpolating type IIB backgrounds

2009-07-29

arxiv.org/abs/0907.5147v1

Physics

High Energy Physics

High Energy Physics - Theory

20 pages

Scientific paper

We construct new families of interpolating two-parameter solutions of type IIB supergravity. These correspond to D3-D5 systems on non-compact six-dimensional manifolds which are T^2 fibrations over Eguchi-Hanson and multi-center Taub-NUT spaces, respectively. One end of the interpolation corresponds to a solution with only D5 branes and vanishing NS three-form flux. A topology changing transition occurs at the other end, where the internal space becomes a direct product of the four-dimensional surface and the two-torus and the complexified NS-RR three-form flux becomes imaginary self-dual. Depending on the choice of the connections on the torus fibre, the interpolating family has either N=2 or N=1 supersymmetry. In the N=2 case it can be shown that the solutions are regular.

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