Defect flows in minimal models

Details Defect flows in minimal models Defect flows in minimal models

2009-07-09

arxiv.org/abs/0907.1497v2

JHEP 0911:057,2009

Physics

High Energy Physics

High Energy Physics - Theory

35 pages, 21 figures. 1 reference added

Scientific paper

10.1088/1126-6708/2009/11/057

In this paper we study a simple example of a two-parameter space of renormalisation group flows of defects in Virasoro minimal models. We use a combination of exact results, perturbation theory and the truncated conformal space approach to search for fixed points and investigate their nature. For the Ising model, we confirm the recent results of Fendley et al. In the case of central charge close to one, we find six fixed points, five of which we can identify in terms of known defects and one of which we conjecture is a new non-trivial conformal defect. We also include several new results on exact properties of perturbed defects and on the renormalisation group in the truncated conformal space approach.

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