Gauge-invariant truncation scheme for the Schwinger-Dyson equations of QCD

Details Gauge-invariant truncation scheme for the Schwinger-Dyson equations of QCD Gauge-invariant truncation scheme for the Schwinger-Dyson equations of QCD

2007-12-17

arxiv.org/abs/0712.2707v1

Phys.Rev.D77:061702,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 2 figures

Scientific paper

10.1103/PhysRevD.77.061702

We present a new truncation scheme for the Schwinger-Dyson equations of QCD that respects gauge invariance at any level of the dressed loop expansion. When applied to the gluon self-energy, it allows for its non-perturbative treatment without compromising the transversality of the solution, even when entire sets of diagrams (most notably the ghost loops) are omitted, or treated perturbatively.

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