Wednesday, January 23, 2013

1301.5292 (Natalia Alkofer et al.)

The non-perturbative BRST quartet mechanism in Landau gauge QCD:
Ghost-gluon and ghost-quark bound states
   [PDF]

Natalia Alkofer, Reinhard Alkofer
The non-perturbative BRST quartet mechanism in infrared Landau gauge QCD is presented. It is demonstrated that positivity violation for transverse gluons allows to identify the gluon's non-perturbative BRST quartet. To describe the respective BRST-daughter state a truncated Bethe-Salpeter equation for the gluon-ghost bound state is investigated. An analogous construction for quarks yields a truncated Bethe-Salpeter equation for the quark-ghost bound state. The gluon-ghost bound state equation in two space-time dimensions has been numerically solved.
View original: http://arxiv.org/abs/1301.5292

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