Comparison of quantum field perturbation theory for the light front with the theory in lorentz coordinates
High Energy Physics - Theory
2008-11-26 v1
Abstract
The relationship between the perturbation theory in light-front coordinates and Lorentz-covariant perturbation theory is investigated. A method for finding the difference between separate terms of the corresponding series without their explicit evaluation is proposed. A procedure of constructing additional counter-terms to the canonical Hamiltonian that compensate this difference at any finite order is proposed. For the Yukawa model, the light-front Hamiltonian with all of these counter-terms is obtained in a closed form. Possible application of this approach to gauge theories is discussed.
Keywords
Cite
@article{arxiv.hep-th/9901110,
title = {Comparison of quantum field perturbation theory for the light front with the theory in lorentz coordinates},
author = {S. A. Paston and V. A. Franke},
journal= {arXiv preprint arXiv:hep-th/9901110},
year = {2008}
}
Comments
LaTex 2.09, 20 pages, 5 figures