Triangle Seminars
Wednesday, 27 Feb 2013
10 to the -5
📍 London
Eugene Lim
(King's College)
Abstract:
I will describe how this number comes from quantum fluctuations during the earliest moments of the Big Bang to become the large scale structure of cosmology that we see today in the skies.
I will describe how this number comes from quantum fluctuations during the earliest moments of the Big Bang to become the large scale structure of cosmology that we see today in the skies.
Posted by: KCL
Non-Abelian T-duality in sypergravity and the AdS/CFT correspondence
Konstadinos Sfetsos
(Surrey)
Abstract:
We will explain the notion of T-duality in supergravity backgrounds with non-Abelian isometries and non-vanishing RR fluxes. We will then focus on type-II backgrounds on which the duality action preserves supersymmetry. For the case of D3-branes at the tip of the conifold dualising along an SU(2) isometry provides a type-IIA background with M-theory lift is of the type describing duals to certain N=1 SCFT quivers produced by M5-branes wrapping a Riemann surface. In the non-conformal cases we find smooth duals in massive IIA supergravity with a Romans mass naturally quantised. We initiate the interpretation of these geometries in the context of the AdS/CFT correspondence and discuss the fate of various charges under dualisation. The backgrounds suggest a form of Seiberg duality in the dual field theories which also exhibit domain walls and confinement in the infrared.
We will explain the notion of T-duality in supergravity backgrounds with non-Abelian isometries and non-vanishing RR fluxes. We will then focus on type-II backgrounds on which the duality action preserves supersymmetry. For the case of D3-branes at the tip of the conifold dualising along an SU(2) isometry provides a type-IIA background with M-theory lift is of the type describing duals to certain N=1 SCFT quivers produced by M5-branes wrapping a Riemann surface. In the non-conformal cases we find smooth duals in massive IIA supergravity with a Romans mass naturally quantised. We initiate the interpretation of these geometries in the context of the AdS/CFT correspondence and discuss the fate of various charges under dualisation. The backgrounds suggest a form of Seiberg duality in the dual field theories which also exhibit domain walls and confinement in the infrared.
Posted by: IC
Thursday, 28 Feb 2013
TBA
Robert de Mello Koch
(University of Witwatersrand, South Africa)