Orbifold SUSY GUT from the Heterotic String
arXiv:0810.0167 · doi:10.1063/1.3051976
Abstract
From the string partition function, we discuss the mass-shell and GSO projection conditions valid for Kaluza-Klein (KK) as well as massless states in the heterotic string theory compactified on a nonprime orbifold. Based on the obtained conditions we construct a 4D string standard model, which is embedded in a 6D SUSY GUT by including KK states above the compactification scale. We discuss the stringy threshold corrections to gauge couplings, including the Wilson line effects.
To appear in the SUSY08 proceedings, 3 pages, LaTEX