Abstract
We discuss how realistic low-energy physics can arise from the × superstring. A key role is played by the discrete symmetries which typically arise after compactification. Cosmological problems are avoided because the discrete symmetry we employ is shown to be effectively embedded in a Peccei-Quinn symmetry. The models we present seem to satisfy the known phenomenological and cosmological constraints. In particular they possess a harmless axion. The existence of topologically stable superconducting vortices (strings), surviving until today, is also predicted.
- Received 17 October 1985
DOI:https://doi.org/10.1103/PhysRevLett.56.432
©1986 American Physical Society