Abstract
A comparison of the compact and the noncompact lattice action for 2+1 dimensional QED is made. In particular, the chiral order parameter < χχ> and the monopole density ϱ m are computed as functions of β for N f = 0,2 fermion flavours. The results reveal a strong correlation between < χχ> and ϱ m . Moreover, this correlation is identical for the compact and noncompact theories. This is interpreted as evidence that monopole condensation drives chiral symmetry breaking in lattice QED 3.
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