Warping and F-term uplifting

Details Warping and F-term uplifting Warping and F-term uplifting

2007-07-31

arxiv.org/abs/0707.4583v3

JHEP 0709:125,2007

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, v3: typos, minor clarifications added

Scientific paper

10.1088/1126-6708/2007/09/125

We analyse the effective supergravity model of a warped compactification with matter on D3 and D7-branes. We find that the main effect of the warp factor is to modify the F-terms while leaving the D-terms invariant. Hence warped models with moduli stabilisation and a small positive cosmological constant resulting from a large warping can only be achieved with an almost vanishing D-term and a F-term uplifting. By studying string-motivated examples with gaugino condensation on magnetised D7-branes, we find that even with a vanishing D-term, it is difficult to achieve a Minkowski minimum for reasonable parameter choices. When coupled to an ISS sector the AdS vacua is uplifted, resulting in a small gravitino mass for a warp factor of order 10^-5.

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