Abstract

We present a detailed study of the phase diagram in the β-m plane for Compact Lattice QED. We analyse the scaling properties of the distribution of the partition function zeros in the complex fermion mass plane on 4 4 , 6 4 , 8 4 and 10 4 lattices. The finite size scaling behaviour gives strong indications for a first order phase transition at any value of the fermion mass.

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