Interactions of Strings Compactified on Orbifolds.
Abstract
It is very important to understand the process of string compactification before one can extract any reliable phenomenology. We consider an exactly solvable method of string compactification, in which the internal space is an orbifold. We compute various interaction amplitudes and describe how other amplitudes can be calculated. Multivalued string variables are handled by formulating the amplitudes on covering spaces where they become single valued. In the computation of the amplitudes, stretched string intermediate states give rise to expressions that are nonperturbative from the nonlinear sigma model point of view. We also discuss, in the context of Z orbifold, the 'blowing up' of the fixed points of an orbifold, to give rise to a CalabiYau manifold. The resulting Calabi Yau manifold is shown to be nonperturbatively stable.
 Publication:

Ph.D. Thesis
 Pub Date:
 September 1987
 Bibcode:
 1987PhDT.......110H
 Keywords:

 Physics: Elementary Particles and High Energy