2002/11/19 by Patrick Dorey, Dorey, Patrick, J. Luis Miramontes +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #hep-th
paper · pdf · doi:10.48550/arxiv.hep-th/0211174
Talk presented in "Workshop on Integrable Theories, Solitons and Duality", Sao Paulo, July 2002
arxiv created 2002/11/19 · arxiv updated 2009/11/30
The physical mass scales that determine the behaviour of general (simply-laced) Homogeneous Sine-Gordon models are investigated by means of a study of their finite-size effects, using the thermodynamic Bethe ansatz. These models describe integrable multiparameter perturbations of the theory of level-k G-parafermions, where G is a Lie group. The parameters can be related to adjustable mass scales of stable and unstable particles. Our results confirm the presence of unstable particle states at generic values of k, as predicted at large k by semiclassical arguments.