Stringy corrections to Kahler potentials, SUSY breaking, and the cosmological constant problem

By Vijay Balasubramanian, Per Berglund. Journal of High Energy Physics, 2004

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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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/cae55e56cc3f81ae45d2894a057b95e34d62c498

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Citations in the corpus

Kahler moduli inflation (2005, background): “(For other recent work on perturbative corrections in IIB flux compactifications see [18, 19, 20, 21 , 22]).”
Fixing all moduli in a simple f-theory compactification (2005, background): “Another recent suggestion for stabilizing F-theory models with several Kähler moduli in a controllable regime, using the same ingredients as in [65] but in a different scaling regime, appeared in [8,9]; it would be interesting to see if similarly explicit constructions are possible in that context.”
Systematics of string loop corrections in type IIB Calabi-Yau flux compactifications (2007, methodology): “[ 23 ] pointed out that there is an upper bound on the |W0| in order to find a KKLT minimum |W0| ≤ Wmax.”
Jumping Through Loops: On Soft Terms from Large Volume Compactifications (2007, background): “If we allow for very small values of W0 (so that KKLT minima exist at all), the above minimum can coexist with the KKLT minimum [4, 50 ].”
General analysis of LARGE Volume Scenarios with string loop moduli stabilisation (2008, background): “Furthermore, the combination of nonperturbative effects [4, 5] with perturbative α ′ corrections [6, 7 , 8] has allowed a general”
Large-volume flux compactifications: Moduli spectrum and D3/D7 soft supersymmetry breaking (2005, background): “Fortunately a large new class of minima of the full scalar potential, differing from the KKLT solutions, has been recently uncovered [14] (also see [ 15 ]).”
Building an explicit de Sitter (2012, background): “negative curvature of the internal space alone [9{16]. The mechanism for moduli stabilization can simultaneously break supersymmetry (SUSY) spontaneously by generating non-vanishing F- and/or D-terms [17,18]. Alternatively, SUSY breaking can be achieved by inserting an additional quasi-explicit sour”
Soft SUSY breaking terms for chiral matter in IIB string compactifications (2006, methodology): “consider these corrections using the results of [ 50 ].”
Phenomenology of a pseudo-scalar inflaton: naturally large nongaussianity (2011, background): “Possibly, interesting models from the perspective of obtaining strong inverse decay effects, are based on the large volume compactification of [66, 67, 68].”