Author/Authors :
Tatsuo Kobayashi، نويسنده , , Daijiro Suematsu، نويسنده , , Kiyonori Yamada، نويسنده , , Yoshio Yamagishi، نويسنده ,
Abstract :
We study soft scalar masses in comparison with gaugino masses in 4-dimensional string models. In general non-universal soft masses are derived in orbifold models. We give conditions on modular weights which lead to a large non-degeneracy in the soft scalar mass spectrum. This non-universality is applied to the unification of gauge coupling constants in the minimal string model.