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Durham University

Centre for Particle Theory

Research Staff

Publication details for Patrick Dorey

Dorey, Patrick & Miramontes, J. Luis (2002), Aspects of the homogeneous sine-Gordon models, Workshop on Integrable Theories, Solitons and Duality. Sao Paulo.

Author(s) from Durham

Abstract

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.