Form factor approach to diagonal finite volume matrix elements in Integrable QFT
High Energy Physics - Theory
2015-06-15 v1 Statistical Mechanics
Abstract
We derive an exact formula for finite volume excited state mean values of local operators in 1+1 dimensional Integrable QFT with diagonal scattering. Our result is a non-trivial generalization of the LeClair-Mussardo series, which is a form factor expansion for finite size ground state mean values.
Cite
@article{arxiv.1305.3373,
title = {Form factor approach to diagonal finite volume matrix elements in Integrable QFT},
author = {B. Pozsgay},
journal= {arXiv preprint arXiv:1305.3373},
year = {2015}
}
Comments
29 pages