TBA equations for excited states in the O(3) and O(4) nonlinear sgr-model
Abstract
TBA integral equations are proposed for one-particle states in the sausage and SS models and their sgr-model limits. Combined with the ground-state TBA equations the exact mass gap is computed in the O(3) and O(4) nonlinear sgr-model and the results are compared to 3-loop perturbation theory and Monte Carlo data.
- Publication:
-
Journal of Physics A Mathematical General
- Pub Date:
- February 2004
- DOI:
- arXiv:
- arXiv:hep-th/0309009
- Bibcode:
- 2004JPhA...37.1881B
- Keywords:
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- High Energy Physics - Theory;
- High Energy Physics - Lattice
- E-Print:
- 28 pages, 2 eps figures, LaTeX, typo corrected