2014/09/30 by Yuta Hamada, Tatsuo Kobayashi, Shohei Uemura
Physics and Astronomy · #Black Holes and Theoretical Physics #Brane #Cosmology and Gravitation Theories #Gauge (firearms) #Geography #Particle physics #Particle physics theoretical and experimental studies #Physics #Standard Model (mathematical formulation) #Theoretical physics #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2015.06.005
25 pgaes, 12 figures: v2 appendix added
openalex publication_date 2015/06/12 · arxiv created 2015/07/31 · arxiv updated 2015/12/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 the gauge coupling constants of these models. The tree level gauge coupling is a function of the compactification moduli, the string scale, the string coupling and the winding numbers 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 of the same order.