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SUMMARY:Exceptional Flux Compactifications - Guarino\, A (Rijksuniversitei
 t Groningen)
DTSTART:20120628T161500Z
DTEND:20120628T163000Z
UID:TALK38739@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:In the last decade\, a framework in which string dualities are
  implemented at the supergravity level has been developed\, i.e.\, the so-
 called embedding tensor formalism. However\, the connection between this f
 ormalism and string theory realisations remains still obscure since most o
 f the supergravities obtained by using the embedding tensor formalism corr
 espond to very exotic (non-)geometries in the string side. \n\nIn this tal
 k we consider type II flux backgrounds compatible with the absence of bran
 e sources\, and construct their explicit embedding into maximal D=4 superg
 ravity. This enables us to investigate the critical points\, mass spectra 
 and gauge groups of such "exceptional" backgrounds in a systematic way. We
  will chart the landscape of vacua in some specific setups which are relev
 ant from the string theory viewpoint and discuss the issues of stability a
 nd supersymmetry at those vacuum solutions. Finally we will point towards 
 some natural extensions of the results.\n\n
LOCATION:Seminar Room 2\, Newton Institute Gatehouse
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