Trinification from superstring toward MSSM

Abstract

In this talk, I present a family unification in $Z_3$ orbifolded $E_8\times E_8^{\prime }$ heterotic strings. It is argued that trinification is a plausible candidate toward supersymmetric standard model at low energy.

9 pages. Talk presented at String Phenomenology Workshop, Durham, England, July 29-Aug. 4, 2003