### 18.10.2012 (Thursday)

#### On Non-Abelian T-Dualities and AdS Geometries

Regular Seminar Daniel Thompson (Solvay Institutes)

 at: 14:00 QMWroom 208 abstract: I will explain how the notion of T-duality can be generalised to the case of a non-abelian isometry group and applied as a solution generating symmetry to type II supergravity backgrounds involving RR flux. I will show some novel mappings between IIB and (massive) IIA supergravity and apply the technique to backgrounds of importance in the context of the gauge/gravity correspondence. In particular we will find some surprising connections between $AdS_5\times S^5$ and the geometry proposed by Gaiotto and Maldacena as dual to certain N=2 SCFT's and between the Klebanov-Witten background ($AdS_5 \times T^{1,1}$) and the geometries discussed already in this seminar series by Wecht as dual to certain N=1 SCFT's. Time permitting I will describe some recent developments relating to the gravity duals of cascading gauge theories.