De Sitter string vacua from supersymmetric D terms
Sep, 200317 pages
Published in:
- JHEP 10 (2003) 056
e-Print:
- hep-th/0309187 [hep-th]
Report number:
- NSF-KITP-03-81,
- DAMTP-2003-90,
- MCGILL-03-21,
- SU-ITP-03-26
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Abstract: (arXiv)
We propose a new mechanism for obtaining de Sitter vacua in type IIB string theory compactified on (orientifolded) Calabi-Yau manifolds similar to those recently studied by Kachru, Kallosh, Linde and Trivedi (KKLT). dS vacuum appears in KKLT model after uplifting an AdS vacuum by adding an anti-D3-brane, which explicitly breaks supersymmetry. We accomplish the same goal by adding fluxes of gauge fields within the D7-branes, which induce a D-term potential in the effective 4D action. In this way we obtain dS space as a spontaneously broken vacuum from a purely supersymmetric 4D action. We argue that our approach can be directly extended to heterotic string vacua, with the dilaton potential obtained from a combination of gaugino condensation and the D-terms generated by anomalous U(1) gauge groups.- string model
- supersymmetry
- field theory: tensor
- space-time: de Sitter
- space: Calabi-Yau
- vacuum state
- potential: Kaehler
- superpotential
- bibliography
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