D-branes at del Pezzo singularities: global embedding and moduli stabilisation

By M. Cicoli, S. Krippendorf, Chris Mayrhofer, F. Quevedo, R. Valandro. 2012

144 citations recorded by the source corpus.

A bstractIn the context of type IIB string theory we combine moduli stabilisation and model building on branes at del Pezzo singularities in a fully consistent global compactification. By means of toric geometry, we classify all the Calabi-Yau manifolds with 3 < h1,1 < 6 which admit two identical del Pezzo singularities mapped into each other under the orientifold involution. This effective singularity hosts the visible sector containing the Standard Model while the Kähler moduli are stabilised via a combination of D-terms, perturbative and non-perturbative effects supported on hidden sectors. We present concrete models where the visible sector, containing the Standard Model, gauge and matter content, is built via fractional D3-branes at del Pezzo singularities and all the Kähler moduli are fixed providing an explicit realisation of both KKLT and LARGE volume scenarios, the latter with D-term uplifting to de Sitter minima. We perform the consistency checks for global embedding such as tadpole, K-theory charges and Freed-Witten anomaly cancellation. We briefly discuss phenomenological and cosmological implications of our models.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7be6f38de3b71c91218faa613e126b3bdc729673

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Citations in the corpus

De Sitter vs Quintessence in String Theory (2018, methodology): “te contribution to the 4D scalar potential which can be used to obtain a dS vacuum [85]. Let { 16 { us stress that this approach to dS vacua has been used in several explicit global Calabi-Yau models [53,91,92,94]. The generality of this mechanism is based on the following observations: D7 tadpole c”
Explicit de Sitter flux vacua for global string models with chiral matter (2013, methodology): “For this construction of a chiral global model we follow the same philosophy as in [11, 12].”
Building an explicit de Sitter (2012, methodology): “The use of such a flux to fix the deformation moduli of D7-branes such that they can support gaugino condensation was suggested in [26].”