Anomalous U(1) gauge symmetries and heterotic-typeI/II string duality
Abstract
Description
Anomalous U(1) gauge symmetries can appear both in heterotic and type I string theories. In the heterotic case we find a single anomalous U(1), while in open string theories several such symmetries can appear. Nonetheless, there is a conjectured duality symmetry that might connect these two theories. We review the properties of anomalous gauge symmetries in various string theories as well as the status of this heterotic-type I/II duality. We also comment on the possible phenomenological applications of anomalous gauge symmetries in string theory.
7 pages, Latex, JHEP, Contribution to the Proceedings of TMR99, European Program Meeting on Quantum Aspects of Gauge Theories, Supersymmetry and Unification, Paris, September 1999
7 pages, Latex, JHEP, Contribution to the Proceedings of TMR99, European Program Meeting on Quantum Aspects of Gauge Theories, Supersymmetry and Unification, Paris, September 1999