Effective Yukawa Couplings in Noncompact Lattice QED

Details Effective Yukawa Couplings in Noncompact Lattice QED Effective Yukawa Couplings in Noncompact Lattice QED

1995-03-30

arxiv.org/abs/hep-lat/9503026v1

Phys.Lett.B353:100-106,1995

Physics

High Energy Physics

High Energy Physics - Lattice

12 pages, uuencoded compressed postscript

Scientific paper

10.1016/0370-2693(95)00555-Y

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.

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