DMCA
Realistic D-brane Models on Warped Throats: Fluxes, Hierarchies and Moduli Stabilization,” hepth/0312051; 27 Cascales and
| Venue: | Chiral 4d N = 1 String Vacua with D-Branes and NSNS and RR Fluxes,” JHEP 0305 (2003) 011, hep-th/0303024 |
| Citations: | 56 - 10 self |
BibTeX
@INPROCEEDINGS{Cascales_realisticd-brane,
author = {J. F. G. Cascales and M. P. García Del Moral and F. Quevedo and A. M. Uranga},
title = {Realistic D-brane Models on Warped Throats: Fluxes, Hierarchies and Moduli Stabilization,” hepth/0312051; 27 Cascales and},
booktitle = {Chiral 4d N = 1 String Vacua with D-Branes and NSNS and RR Fluxes,” JHEP 0305 (2003) 011, hep-th/0303024},
year = {}
}
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Abstract
Abstract: We describe the construction of string theory models with semirealistic spectrum in a sector of (anti) D3-branes located at an orbifold singularity at the bottom of a highly warped throat geometry, which is a generalisation of the Klebanov-Strassler deformed conifold. These models realise the Randall-Sundrum proposal to naturally generate the Planck/electroweak hierarchy in a concrete string theory embedding, and yielding interesting chiral open string spectra. We describe examples with Standard Model gauge group (or left-right symmetric extensions) and three families of SM fermions, with correct quantum numbers including hypercharge. The dilaton and complex structure moduli of the geometry are stabilised by the 3-form fluxes required to build the throat. We describe diverse issues concerning the stabilisation of geometric Kähler moduli, like blow-up modes of the orbifold singularities, via D term potentials and gauge theory non-perturbative effects, like gaugino condensation. This local geometry, once embedded in a full compactification, could give rise to models with all moduli stabilised, and with the potential to lead to de Sitter vacua. Issues of gauge unification, proton stability, supersymmetry breaking
Keyphrases
modulus stabilization warped throat realistic d-brane model orbifold singularity sitter vacuum randall-sundrum proposal left-right symmetric extension interesting chiral open string spectrum concrete string theory embedding correct quantum number supersymmetry breaking standard model gauge group 3-form flux complex structure modulus diverse issue gauge theory non-perturbative effect geometric hler modulus theory model planck electroweak hierarchy local geometry gaugino condensation semirealistic spectrum full compactification gauge unification term potential blow-up mode proton stability warped throat geometry sm fermion
