Strongly Coupled QED

Details Strongly Coupled QED Strongly Coupled QED

1996-07-29

arxiv.org/abs/hep-lat/9607070v1

Nucl.Phys.Proc.Suppl. 53 (1997) 148-154

Physics

High Energy Physics

High Energy Physics - Lattice

Plenary talk given at the International Symposium on Lattice Field Theory, 4-8 June 1996, St. Louis, Missouri, USA, 19 pages,

Scientific paper

10.1016/S0920-5632(96)00609-3

A short review of some of the most relevant contributions to non-perturbative QED is done. Since a Gaussian behaviour of QED \`a la $\lambda\phi^4$ has been ruled out by the numerical data, I analyse the other two most reliable scenarios, i.e. triviality \`a la Nambu-Jona Lasinio and non-Gaussian critical behaviour. I give a suggestive theoretical argument against a Gaussian behaviour of QED \`a la Nambu-Jona Lasinio, and show how the numerical data for the susceptibility at the critical point of QED support this result.

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