Stringy corrections to Kahler potentials, SUSY breaking, and the cosmological constant problem
arXiv:hep-th/0408054 · doi:10.1088/1126-6708/2004/11/085
Abstract
The moduli of N=1 compactifications of IIB string theory can be stabilized by a combination of fluxes (which freeze complex structure moduli and the dilaton) and nonperturbative superpotentials (which freeze Kahler moduli), typically leading to supersymmetric AdS vacua. We show that stringy corrections to the Kahler potential qualitatively alter the structure of the effective scalar potential even at large volume, and can give rise to non-supersymmetric vacua including metastable de Sitter spacetimes. Our results suggest an approach to solving the cosmological constant problem, so that the scale of the 1-loop corrected cosmological constant can be much smaller than the scale of supersymmetry breaking.
LaTeX, 2 EPS figures. If you use mpage on a Unix machine to print multiple pages on a single sheet you may experience problems printing the figures. v3: corrections and comments in cosmological constant section
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