T-duality and the weakly coupled heterotic string
arXiv:0908.3029 · doi:10.1063/1.3327560
Abstract
T-duality is a symmetry of the heterotic string to all orders in string perturbation theory. This results in an effective four dimensional supergravity theory with desirable features for phenomenology. T-duality, as well as, generically, an anomalous U(1), is broken by quantum anomalies of the effective field theory. The structure of the full anomaly is presented, and the mechanisms for anomaly cancellation are described.
12 pages, plenary talk at SUSY09, to appear in the proceedings