Roaming form factors for the tricritical to critical Ising flow
High Energy Physics - Theory
2016-07-12 v2 Statistical Mechanics
Abstract
We study the massless flows described by the staircase model introduced by Al.B. Zamolodchikov through the analytic continuation of the sinh-Gordon S-matrix, focusing on the renormalisation group flow from the tricritical to the critical Ising model. We show that the properly defined roaming limits of certain sinh-Gordon form factors are identical to the form factors of the order and disorder operators for the massless flow. As a by-product, we also construct form factors for a semi-local field in the sinh-Gordon model, which can be associated with the twist field in the ultraviolet limiting free massless bosonic theory.
Keywords
Cite
@article{arxiv.1604.05635,
title = {Roaming form factors for the tricritical to critical Ising flow},
author = {D. X. Horvath and P. E. Dorey and G. Takacs},
journal= {arXiv preprint arXiv:1604.05635},
year = {2016}
}
Comments
23 pages, Latex2e file. v2: published version, clarifications added, typos corrected