Effective Yukawa Couplings in Noncompact Lattice QED
High Energy Physics - Lattice
2008-11-26 v1
Abstract
We investigate effective Yukawa couplings of mesons to the elementary fermions in noncompact lattice QED. The couplings are extracted from suitable fermion-antifermion-meson three-point functions calculated by Monte Carlo simulations with dynamical staggered fermions. The scaling behaviour is compatible with expectations from perturbation theory, thus indicating triviality of QED. The lines of constant Yukawa coupling are compared to flows of other quantities. Consistency is seen, at most, for weak coupling.
Keywords
Cite
@article{arxiv.hep-lat/9503026,
title = {Effective Yukawa Couplings in Noncompact Lattice QED},
author = {M. Goeckeler and R. Horsley and P. E. L. Rakow and G. Schierholz},
journal= {arXiv preprint arXiv:hep-lat/9503026},
year = {2008}
}
Comments
12 pages, uuencoded compressed postscript