Stabilizing All Kähler Moduli in Type IIB Orientifolds

Bobkov, Konstantin, Braun, Volker, Kumar, Piyush and Raby, Stuart (2010) Stabilizing All Kähler Moduli in Type IIB Orientifolds. Journal of High Energy Physics, 2010 (12). ISSN 1029-8479

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We describe a simple and robust mechanism that stabilizes all Kähler moduli in Type IIB orientifold compactifications. This is shown to be possible with just one non-perturbative contribution to the superpotential coming from either a D3-instanton or D7-branes wrapped on an ample divisor. This moduli-stabilization mechanism is similar to and motivated by the one used in the fluxless G 2 compactifications of M -theory. After explaining the general idea, explicit examples of Calabi-Yau orientifolds with one and three Kähler moduli are worked out. We find that the stabilized volumes of all two-and four-cycles as well as the volume of the Calabi-Yau manifold are controlled by a single parameter, namely, the volume of the ample divisor. This feature would dramatically constrain any realistic models of particle physics embedded into such compactifications. Broad consequences for phenomenology are discussed, in particular the dynamical solution to the strong CP-problem within the frame-work.

Item Type: Article
Divisions: School of Theoretical Physics > Preprints
Date Deposited: 05 Oct 2017 19:19
Last Modified: 20 Dec 2022 14:29
Identification Number: DIAS-STP-10-02

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