Exact expectation values of local fields in quantum sine-Gordon model
High Energy Physics - Theory
2009-10-30 v1 Condensed Matter
Quantum Algebra
q-alg
Abstract
We propose an explicit expression for vacuum expectation values of the exponential fields in the sine-Gordon model. Our expression agrees both with semi-classical results in the sine-Gordon theory and with perturbative calculations in the Massive Thirring model. We use this expression to make new predictions about the large-distance asymptotic form of the two-point correlation function in the XXZ spin chain.
Keywords
Cite
@article{arxiv.hep-th/9611238,
title = {Exact expectation values of local fields in quantum sine-Gordon model},
author = {S. Lukyanov and A. Zamolodchikov},
journal= {arXiv preprint arXiv:hep-th/9611238},
year = {2009}
}
Comments
18 pages, harvmac.tex, 2 figures