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arXiv · hep-lat/0409038

Non-compact QED(3) coupled to a four-fermi interaction

J. B. Kogut·C. G. Strouthos·I. N. Tziligakis
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Abstract

We present preliminary numerical results for the three dimensional non-compact QED with a weak four-fermion term in the lattice action. Approaches based on Schwinger-Dyson studies, arguments based on thermodynamic inequalities and numerical simulations lead to estimates of the critical number of fermion flavors (below which chiral symmetry is broken) ranging from $N_{fc}=1$ to $N_{fc}=4$. The weak four-fermion coupling provides the framework for an improved algorithm, which allows us to simulate the chiral limit of massless fermions and expose delicate effects.

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J. B. Kogut, C. G. Strouthos, I. N. Tziligakis. 2004-09-10. Non-compact QED(3) coupled to a four-fermi interaction. https://doi.org/10.1016/j.nuclphysbps.2004.11.131

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