Inflation in supersymmetric cosmic string theories

Abstract We examine a non-Abelian SUSY SU (2)× U (1) gauge theory and a SUSY U (1) theory originally used to investigate the microphysics of cosmic strings in supersymmetric theories. Such theories arise naturally in grand unified theories. We show that both theories automatically include hybrid inflation. In the latter theory we use a D term to break the symmetry. SUSY is broken during inflation and restored afterwards. Cosmic strings are formed at the end of inflation. The temperature anisotropy is calculated and found to vary as ( M GUT / M P ) 2 .