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arXiv · hep-lat/9205030

Renormalization group and triviality in noncompact lattice QED with light fermions

V. Azcoiti·G. Di Carlo·A. F. Grillo
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Abstract

In the framework of noncompact lattice QED with light fermions, we derive the functional dependence of the average energy per plaquette on the bare parameters using block-spin Renormalization Group arguments and assuming that the renormalized coupling vanishes. Our numerical results for this quantity in $8^4$ and $10^4$ lattices show evidence for triviality in the weak coupling phase and point to a non vanishing value for the renormalized coupling constant in the strong coupling phase.

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V. Azcoiti, G. Di Carlo, A. F. Grillo. 1992-06-01. Renormalization group and triviality in noncompact lattice QED with light fermions. https://doi.org/10.1142/s0217732392002974

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