Sine-Gordon Expectation Values of Exponential Fields With Variational Perturbation Theory
High Energy Physics - Theory
2011-07-19 v2
Abstract
In this paper, expectation values of exponential fields in the 2-dimensional Euclidean sine-Gordon field theory are calculated with variational perturbation approach up to the second order. Our numerical analysis indicates that for not large values of the exponential-field parameter , our results agree very well with the exact formula conjectured by Lukyanov and Zamolodchikov in Nucl. Phys. B 493, 571 (1997).
Keywords
Cite
@article{arxiv.hep-th/0409237,
title = {Sine-Gordon Expectation Values of Exponential Fields With Variational Perturbation Theory},
author = {Wen-Fa Lu},
journal= {arXiv preprint arXiv:hep-th/0409237},
year = {2011}
}
Comments
only abbreviated the original, 12 pages, 2 EPS figures, to be published in Phys. Lett. B