The spectrum of boundary sine-Gordon theory
Abstract
We review our recent results on the on-shell description of sine-Gordon model with integrable boundary conditions. We determined the spectrum of boundary states by closing the boundary bootstrap and gave a derivation of Al.B. Zamolodchikov's (unpublished) formulae for the boundary energy and the relation between the Lagrangian (ultraviolet) and bootstrap (infrared) parameters. These results have been checked against numerical finite volume spectra coming from the truncated conformal space approach. We find an entirely consistent picture and strong evidence for the validity of the conjectured spectrum and scattering amplitudes, which together give a complete description of the boundary sine-Gordon theory on mass shell.
Keywords
Cite
@article{arxiv.hep-th/0108211,
title = {The spectrum of boundary sine-Gordon theory},
author = {Z. Bajnok and L. Palla and G. Takacs},
journal= {arXiv preprint arXiv:hep-th/0108211},
year = {2015}
}
Comments
10 pages. To appear in the proceedings of the NATO Advanced Research Workshop on "Statistical Field Theories", Como, Italy, 18-23 June 2001. Extended version of conference talk. LaTeX2e, uses kapproc.cls. References added