Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-12-19
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, 7 figures, talk presented by G Watts at the workshop "Integrable Models and Applications: from Strings to Condensed
Scientific paper
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.
Feverati Giovanni
Graham Kevin
Pearce Paul A.
Toth Gabor Zs.
Watts Gerard
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