Toward de Sitter space from ten dimensions

Using a 10D lift of nonperturbative volume stabilization in type IIB string theory, we study the limitations for obtaining de Sitter vacua. Based on this we find that the simplest Kachru, Kallosh, Linde, and Trivedi vacua with a single Kähler modulus stabilized by a gaugino condensate cannot be upli...

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Bibliographic Details
Published in:Physical review. D 2018-02, Vol.97 (4), Article 046010
Main Authors: Moritz, Jakob, Retolaza, Ander, Westphal, Alexander
Format: Article
Language:English
Subjects:
Astronomical models
Cosmological constant
Stabilization
String theory
Supersymmetry
Uplift
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Summary:Using a 10D lift of nonperturbative volume stabilization in type IIB string theory, we study the limitations for obtaining de Sitter vacua. Based on this we find that the simplest Kachru, Kallosh, Linde, and Trivedi vacua with a single Kähler modulus stabilized by a gaugino condensate cannot be uplifted to de Sitter. Rather, the uplift flattens out due to stronger backreaction on the volume modulus than has previously been anticipated, resulting in vacua which are metastable and supersymmetry breaking, but that are always anti-de Sitter (AdS). However, we also show that setups such as racetrack stabilization can avoid this issue. In these models it is possible to obtain supersymmetric AdS vacua with a cosmological constant that can be tuned to zero while retaining finite moduli stabilization. In this regime, it seems that de Sitter uplifts are possible with negligible backreaction on the internal volume. We exhibit this behavior also from the 10D perspective.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.97.046010