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

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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.
9 pages, 2 figures

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/191847

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0712.2707
 http://arxiv.org/abs/0712.2707
 Phys.Rev.D77:061702,2008
 doi:10.1103/PhysRevD.77.061702

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arXiv