Fermion propagator for QED_3 in the IR domain

TL;DR

This paper computes the non-perturbative fermion propagator in parity-conserving QED_3 within the infrared domain, highlighting the importance of fermion-loop effects in chiral symmetry breaking.

Contribution

It introduces a non-perturbative evaluation of the fermion propagator in QED_3 considering fermion-loop effects in the IR domain.

Findings

Fermion-loop effects are significant for chiral symmetry breaking.

Results are non-perturbative in the loopwise expansion.

The approach provides insights into IR behavior of QED_3.

Abstract

We evaluate the fermion propagator in parity-conserving QED_3 with N flavours, in the context of an IR domain approximation. This provides results which are non-perturbative in the loopwise expansion sense. We include fermion-loop effects, and show that they are relevant to the chiral symmetry breaking phenomenon, that can be understood in this context.