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Unified models at intermediate energy scales and Kaluza–Klein excitations |
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| Authors: | G K Leontaris N D Tracas |
| Institution: | a CERN Theory Division, 1211 Geneva 23, Switzerland b Physics Department, University of Ioannina, GR–45110 Ioannina, Greece c Physics Department, National Technical University, 157 73 Zografou, Athens, Greece |
| Abstract: | We discuss the possibility of intermediate gauge coupling unification in unified models of string origin. Useful relations of the β-function coefficients are derived, which ensure unification of couplings when Kaluza–Klein excitations are included above the compactification scale. We apply this procedure to two models with SU(3)×SU(3)L×SU(3)R and SU(4)×O(4) gauge symmetries. |
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