A Renormalisation group for TCSA
High Energy Physics - Theory
2007-05-23 v1
Abstract
We discuss the errors introduced by level truncation in the study of boundary renormalisation group flows by the Truncated Conformal Space Approach. We show that the TCSA results can have the qualitative form of a sequence of RG flows between different conformal boundary conditions. In the case of a perturbation by the field phi(13), we propose a renormalisation group equation for the coupling constant which predicts a fixed point at a finite value of the TCSA coupling constant and we compare the predictions with data obtained using TBA equations.
Cite
@article{arxiv.hep-th/0612203,
title = {A Renormalisation group for TCSA},
author = {Giovanni Feverati and Kevin Graham and Paul A. Pearce and Gabor Zs. Toth and Gerard Watts},
journal= {arXiv preprint arXiv:hep-th/0612203},
year = {2007}
}
Comments
11 pages, 7 figures, talk presented by G Watts at the workshop "Integrable Models and Applications: from Strings to Condensed Matter", Santiago de Compostela, Spain, 12-16 September 2005