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D3/D7 branes at singularities: constraints from global embedding and moduli stabilisation

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Abstract

In the framework of type IIB string compactifications on Calabi-Yau orien-tifolds we describe how to construct consistent global embeddings of models with fractional D3-branes and connected ‘flavour’ D7-branes at del Pezzo singularities with moduli stabilisation. Our results are applied to build an explicit compact example with a left-right symmetric model at a dP0 singularity which features three families of chiral matter and gauge coupling unification at the intermediate scale. We show how to stabilise the moduli obtaining a controlled de Sitter minimum and spontaneous supersymmetry breaking. We find an interesting non-trivial dynamical relation between the requirement of TeV-scale soft terms and the correct phenomenological values of the unified gauge coupling and unification scale.

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Author information

Authors and Affiliations

  1. Dipartimento di Fisica ed Astronomia, Università di Bologna, Bologna, Italy

    M. Cicoli

  2. INFN, Sezione di Bologna, Bologna, Italy

    M. Cicoli

  3. Adbus Salam International Centre for Theoretical Physics (ICTP), Strada Costiera 11, Trieste, 34014, Italy

    M. Cicoli, F. Quevedo & R. Valandro

  4. Bethe Center for Theoretical Physics and Physikalisches Institut der Universität Bonn, Nussallee 12, 53115, Bonn, Germany

    S. Krippendorf

  5. Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 19, 69120, Heidelberg, Germany

    C. Mayrhofer

  6. DAMTP, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA, U.K.

    F. Quevedo

  7. INFN, Sezione di Trieste, Trieste, Italy

    R. Valandro

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  1. M. Cicoli
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  2. S. Krippendorf
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  3. C. Mayrhofer
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  4. F. Quevedo
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  5. R. Valandro
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Correspondence to S. Krippendorf.

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ArXiv ePrint: 1304.0022

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Cicoli, M., Krippendorf, S., Mayrhofer, C. et al. D3/D7 branes at singularities: constraints from global embedding and moduli stabilisation. J. High Energ. Phys. 2013, 150 (2013). https://doi.org/10.1007/JHEP07(2013)150

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