Spectrum and scaling in a strongly coupled fermion-gauge-scalar model

Details Spectrum and scaling in a strongly coupled fermion-gauge-scalar model Spectrum and scaling in a strongly coupled fermion-gauge-scalar model

1994-11-29

arxiv.org/abs/hep-lat/9411071v1

Nucl.Phys.Proc.Suppl. 42 (1995) 609-612

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 2 eps figs, encoded with uufiles (Contribution to Lattice 94)

Scientific paper

10.1016/0920-5632(95)00326-5

The strongly coupled lattice gauge models show an interesting mechanism of dynamical mass generation. If a suitable continuum limit can be found, one may think of it as an alternative to the Higgs mechanism. We present data on the spectrum, obtained in the model with U(1) gauge symmetry with dynamical fermions. They indicate that the fermion mass scales in the vicinity of the whole chiral phase transition line. In contrast to this, the composite scalar boson mass seems to get small only in the region near the endpoint E of the Higgs phase transition. Thus this point is the most interesting candidate for approaching the continuum limit. The masses of fermion--antifermion bound states are also discussed.

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