Truncated Schwinger-Dyson Equations and Gauge Covariance in QED3

Details Truncated Schwinger-Dyson Equations and Gauge Covariance in QED3 Truncated Schwinger-Dyson Equations and Gauge Covariance in QED3

2005-11-24

arxiv.org/abs/hep-ph/0511291v3

Few Body Syst.41:185-199,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 11 figures. v3. Improved and Expanded. To appear in Few Body Systems

Scientific paper

10.1007/s00601-007-0177-3

We study the Landau-Khalatnikov-Fradkin transformations (LKFT) in momentum space for the dynamically generated mass function in QED3. Starting from the Landau gauge results in the rainbow approximation, we construct solutions in other covariant gauges. We confirm that the chiral condensate is gauge invariant as the structure of the LKFT predicts. We also check that the gauge dependence of the constituent fermion mass is considerably reduced as compared to the one obtained directly by solving SDE.

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