University of York, Department of Mathematics
Heslington, York YO10 5DD, UK
e-mail: ec9@york.ac.uk
http://www-users.york.ac.uk/~ec9/

Boundaries and boundary bound states in integrable quantum field theory

Abstract:
By quantising boundary breathers in the sinh-Gordon field theory and comparing the results with bootstrap calculations it is possible to discover the dependence of reflection factors on the boundary parameters introduced by general bintegrable boundary conditions. The dependence reveals an interesting weak-strong coupling duality extending the bulk duality property to the situation with boundary.