The finite size spectrum of the 2-dimensional O(3) nonlinear sigma-model
High Energy Physics - Theory
2015-05-13 v2
Abstract
Nonlinear integral equations are proposed for the description of the full finite size spectrum of the 2-dimensional O(3) nonlinear sigma-model in a periodic box. Numerical results for the energy eigenvalues are compared to the rotator spectrum and perturbation theory for small volumes and with the recently proposed generalized Luscher formulas at large volumes.
Keywords
Cite
@article{arxiv.0907.1759,
title = {The finite size spectrum of the 2-dimensional O(3) nonlinear sigma-model},
author = {Janos Balog and Arpad Hegedus},
journal= {arXiv preprint arXiv:0907.1759},
year = {2015}
}
Comments
published version, two appendices added