Year: 2000
Type: article
Abstract: We consider gauge coupling unification in models with TeV scale strings and large compact dimensions realized as type IIB string orientifolds. Following an observation by Ibanez we show that the gauge couplings at low energies can behave as if they effectively unify at MU~2 × 1016 GeV with αU~1/24. This requires the σ model anomaly coefficients [Formula: see text] not to be all equal and their ratio to the β-functions of minimally supersymmetric standard model βa to be a constant independent of the gauge group. If, in addition, [Formula: see text] have a gauge group independent constant piece, the relation between the unified gauge coupling and the dilaton vev is modified so that there can be weakly coupled gauge theories arising from strongly coupled strings.
Source: Modern Physics Letters A
Author: EDI HALYO
Institution: Stanford University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2124117196