Stringy corrections to Kahler potentials, SUSY breaking, and the cosmological constant problem
The moduli of N = 1 compactificat ions 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.
Journal of High Energy Physics
INT SCHOOL ADVANCED STUDIES
Digital Object Identifier (DOI)
Balasubramanian, V. and Berglund, Per, "Stringy corrections to Kahler potentials, SUSY breaking, and the cosmological constant problem" (2005). Journal of High Energy Physics. 81.
Copyright SISSA/ISAS 2005