Beta-supergravity: A Ten-dimensional Theory with
Non-geometric Fluxes

 

Dr David Andriot
Max-Planck-Institute for Physics

 

14 February 2014 (Friday)
2:00 pm
IAS4042, 4/F, Lo Ka Chung Building, Lee Shau Kee Campus, HKUST

Abstract:

Some de Sitter solutions of four-dimensional gauged supergravity have been found with non-geometric fluxes turned on. Uplifting those to ten-dimensional supergravity and string theory is challenging, as they should naively come from so-called non-geometries. After reviewing these concepts and giving examples, The speaker will introduce a reformulation of standard supergravity into a new ten-dimensional theory that contains directly non-geometric fluxes. This "beta-supergravity" then allows the uplift in some cases; in other words, a standard dimensional reduction of this theory leads to some of the four-dimensional gauged supergravities of interest. This theory also provides a good description of the Q-brane, a new exotic brane T-dual to the NS5-brane. Finally, He will say a word on the interesting Generalized Geometry formulation of beta-supergravity.

 

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The seminar is free and open to the public. No registration is required. Seating is on a first-come first-served basis.

HKUST Jockey Club Institute for Advanced Study
URL: http://ias.ust.hk
Enquiries: ias@ust.hk / 2358 5912

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