Unification in Intersecting Brane Models
Kang-Sin Choi
TL;DR
This paper proposes a unification framework for supersymmetric intersecting brane models where gauge couplings differ below the unification scale due to magnetic fluxes, facilitated by brane recombination.
Contribution
It introduces a novel unification scenario embedding quarks and leptons into SO(32) adjoint representations with gauge coupling differentiation via magnetic flux effects.
Findings
Unified gauge coupling can lead to different low-energy gauge couplings.
Brane recombination preserves supersymmetry and enables unification.
Embedding into SO(32) provides a consistent string theory framework.
Abstract
We propose a unification scenario for supersymmetric intersecting brane models. The quarks and leptons are embedded into adjoint representations of SO(32), which are obtained and break by type I string compactified on orbifolds. Its single unified gauge coupling can give rise to different gauge couplings below the unification scale, due to effects of magnetic fluxes. The crucial mechanism is brane recombination preserving supersymmetry.
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