Perturbed Defects and T-Systems in Conformal Field Theory
High Energy Physics - Theory
2008-11-26 v2
Abstract
Defect lines in conformal field theory can be perturbed by chiral defect fields. If the unperturbed defects satisfy su(2)-type fusion rules, the operators associated to the perturbed defects are shown to obey functional relations known from the study of integrable models as T-systems. The procedure is illustrated for Virasoro minimal models and for Liouville theory.
Keywords
Cite
@article{arxiv.0711.0102,
title = {Perturbed Defects and T-Systems in Conformal Field Theory},
author = {Ingo Runkel},
journal= {arXiv preprint arXiv:0711.0102},
year = {2008}
}
Comments
24 pages, 13 figures; v2: typos corrected, in particular in (2.10) and app. A.2, version to appear in J.Phys.A