Infrared cutoff dependence of the critical flavor number in three-dimensional QED

Details Infrared cutoff dependence of the critical flavor number in three-dimensional QED Infrared cutoff dependence of the critical flavor number in three-dimensional QED

2003-04-30

arxiv.org/abs/hep-ph/0304302v3

Phys.Rev. D68 (2003) 025017

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure (revtex4), final version

Scientific paper

10.1103/PhysRevD.68.025017

We solve, analytically and numerically, a gap equation in parity invariant
QED_3 in the presence of an infrared cutoff \mu and derive an expression for
the critical fermion number N_c as a function of \mu. We argue that this
dependence of N_c on the infrared scale might solve the discrepancy between
continuum Schwinger-Dyson equations studies and lattice simulations of QED_3.

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