Maths HEP Lunchtime Seminars: Supersymmetric integrable boundary QFT in 1+1 dimensions
30 November 2001 13:00 in CM221
"Contrary to conventional wisdom, imposing on a quantum field theory with boundary the combined constraints of integrability and supersymmetry does not imply that the boundary interactions must be trivial. Specifically, we argue that the N=1 supersymmetric sine-Gordon model with boundary has a two-parameter family of boundary interactions which preserves both integrability and supersymmetry. We also propose the corresponding boundary S matrix for the first supermultiplet of breathers. We then examine RG boundary flows in two closely related models: the scaling supersymmetric Yang-Lee model, and the supersymmetric sinh-Gordon model. Finally, we present some results for the N=2 case."