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arXiv · 1409.2740

Standard Model-like D-brane models and gauge couplings

Yuta Hamada·Tatsuo Kobayashi·Shohei Uemura
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Abstract

We systematically search intersecting D-brane models, which just realize the Standard Model chiral matter contents and gauge symmetry. We construct new classes of non-supersymmetric Standard Model-like models. We also study gauge coupling constants of these models. The tree level gauge coupling is a function of compactification moduli, string scale, string coupling and winding number of D-branes. By tuning them, we examine whether the models can explain the experimental values of gauge couplings. As a result, we find that the string scale should be greater than $10^{14-15}$GeV if the compactification scale and the string scale are the same order.

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Yuta Hamada, Tatsuo Kobayashi, Shohei Uemura. 2015-07-31. Standard Model-like D-brane models and gauge couplings. https://doi.org/10.1016/j.nuclphysb.2015.06.005

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