Phenomenology and Cosmology of Weakly Coupled String Theory * † Disclaimer

The weakly coupled vacuum of E8 ⊗ E8 heterotic string theory remains an attractive scenario for phenomenolgy and cosmology. The particle spectrum is reviewed and the issues of gauge coupling unification, dilaton stabilization and modular cosmology are discussed. A specific model for condensation and supersymmetry breaking, that respects known constraints from string theory and is phenomenologically viable, is described. Talk presented at The Richard Arnowitt Fest, April 5-8, 1998, Texas A &MUniversity, College Station, TX, to be published in the proceedings. This work was supported in part by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Division of High Energy Physics of the U.S. Department of Energy under Contract DE-AC03-76SF00098 and in part by the National Science Foundation under grant PHY-95-14797.