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ID: 288727.0, MPI für Gravitationsphysik / Quantum Gravity and Unified Theories
D-branes at Singularities, Compactification, and Hypercharge
Authors:Buican, Matthew; Malyshev, Dmitry; Morrison, David R.; Wijnholt, Martijn; Verlinde, Herman
Date of Publication (YYYY-MM-DD):2007
Title of Journal:Journal of High Energy Physics
Volume:1
Sequence Number of Article:107
Review Status:not specified
Audience:Not Specified
Abstract / Description:We report on progress towards the construction of SM-like gauge theories on the world-volume of D-branes at a Calabi-Yau singularity. In particular, we work out the topological conditions on the embedding of the singularity inside a compact CY threefold, that select hypercharge as the only light U(1) gauge factor. We apply this insight to the proposed open string realization of the SM of hep-th/0508089, based on a D3-brane at a dP8 singularity, and present a geometric construction of a compact Calabi-Yau threefold with all the required topological properties. We comment on the relevance of D-instantons to the breaking of global U(1) symmetries.
External Publication Status:published
Document Type:Article
Communicated by:Hermann Nicolai
Affiliations:MPI für Gravitationsphysik/Quantum Gravity and Unified Theories
Identifiers:DOI:10.1088/1126-6708/2007/01/107
URL:http://www.iop.org/EJ/abstract/1126-6708/2007/01/1...
LOCALID:arXiv:hep-th/0610007
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