Supersymmetric Particle Physics from Intersecting D-Branes

We review recent progress that has been made in the study of particle physics implications from Type II string with intersecting D-branes. While in the past the focus was on deriving particle physics of four-dimensional N=1 supersymmetric solutions of perturbative heterotic string, recent progress has focused on Type II string theory orientifold compactifications with D-branes. We describe examples of chiral supersymmetric constructions of Type IIA orientifolds with D6-branes intersecting at general angles and highlight the specific construction of the three-family supersymmetric Standard-like Models and supersymmetric GUT models. These constructions, when lifted to M theory, correspond to the compactification of M theory on compact, singular G2 holonomy spaces. We further discuss the phenomenology of these models, such as gauge and Yukawa couplings and dynamical supersymmetry breaking in the additional gauge sector of the models. ∗ On Sabbatic Leave from the University of Pennsylvania. 6: Supersymmetry and Superstrings 503