Abstract :
We construct supersymmetric composite models of quarks and leptons from type IIA image orientifold with intersecting D6-branes. In case of image with no tilted image, a composite model of supersymmetric image grand unified theory with four generations is constructed. In case of that one image is tilted, a composite model with image gauge symmetry with three generations of left-handed quarks and leptons is constructed. These models are not realistic, but contain relatively fewer additional exotic particles and image gauge symmetries due to the introduction of the compositeness of quarks and leptons. The masses of some exotic particles are naturally generated through the Yukawa interactions among “preons”.
