TRACAS Nicholas
(National Technical University)
INTERMEDIATE-ENERGY UNIFICATION AND KALUZA-KLEIN EXCITATIONS

We discuss the possibility of intermediate gauge coupling unification in unified models of string origin. Useful relations of the \beta-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)\times SU(3)_L\times SU(3)_R and SU(4)\times O(4) gauge symmetries.

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