1994/09/26 by S. Chaudhuri, S. -W. Chung, Chaudhuri, S. +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.hep-th/9409151
4 pages
arxiv created 1994/09/26 · arxiv updated 2009/11/30
Phenomenologically viable string vacua may require incorporating Kac-Moody algebras at level ≥ 2. We exploit the free fermionic formulation to construct N=(0,2) world-sheet supersymmetric string models with specific phenomenological input: N=1 spacetime supersymmetry, three generations of chiral fermions in gauge groups SO(10) or SU(5), adjoint Higgses, and a single Yukawa coupling of a fundamental Higgs to the third generation. In this talk, we will show models of gauge group SO(10) and of SU(5) without any gauge singlet moduli, and show some novel features appearing in the connection of these two models. The accompanying, and rather non-trivial, discrete chiral sub-algebras can determine hierarchies in the fermion mass matrix. Our approach to string phenomenology opens up the possibility of \it concrete explorations of a wide range of proposals both for dynamical supersymmetry breaking and for the dynamics of the dilaton and other stringy moduli. (Talk presented at DPF 94, Albuquerque, New Mexico)