Renormalization-Scheme-Independent Perturbation Theory by Resumming Logarithms
High Energy Physics - Phenomenology
2009-11-10 v4
Abstract
Results of perturbation theory in quantum field theory generally depend on the renormalization scheme that is in use. In particular, they depend on the scale. We try to make perturbation theory scheme invariant by re-expanding with respect to a scheme invariant quantity. Furthermore, we investigate whether the potentially large logarithms in such an expansion cause inaccuracy and how this can be improved.
Keywords
Cite
@article{arxiv.hep-ph/0412254,
title = {Renormalization-Scheme-Independent Perturbation Theory by Resumming Logarithms},
author = {Chris Dams and Ronald Kleiss},
journal= {arXiv preprint arXiv:hep-ph/0412254},
year = {2009}
}
Comments
15 pages, 2 figures. First replaced version: added one reference. Second replaced version: added two references, mention effective-charge method, added remarks about further research possibilities, changed size of graphs a little