c=1 Boundary Conformal Field Theory Revisited

Abstract

Correlation functions of discrete primary fields in the c=1 boundary conformal field theory of a scalar field in a critical periodic boundary potential are computed using the underlying SU(2) symmetry of the model. Bulk amplitudes are unambigously determined and we give a prescription for amplitudes involving discrete boundary fields.Comment: LaTex, 8 pages, 1 figure, uses IOP style files. To appear in the proceedings of the RTN workshop "The quantum structure of spacetime and the geometric nature of fundamental interactions", Copenhagen, September 15-20, 200