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January 7, 2003

de Sitter Solutions of Gauged Supergravity

I hadn’t noticed when their paper appeared last May, but Trigiante’s talk at a Workshop in Leuven caught my eye.

They’ve found stable de Sitter solutions to gauged N=2 supergravity. The gauging is always by a product group (SO(2,1)×SO(2) or SO(2,1)×SO(3)), where one of the factors is noncompact and the other factor admits a Fayet-Iliopoulos term.

It would be quite interesting to embed these gauged supergravity theories in string theory. For compact gaugings, the gauged supergravity theory turns out to be a “consistent truncation” of some ten-dimensional string background. The gauge group ends up being the isometry group of the internal space.

I’ve never had much of a conceptual handle on the noncompact gaugings of extended supergravity theories, but if one could find these solutions as consistent truncations of some string background, that would be very exciting.

Posted by distler at January 7, 2003 12:00 AM

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