Tuesday, January 15, 2013

1301.3089 (Mario Schröck)

Chiral restoration of the momentum space quark propagator through Dirac
low-mode truncation

Mario Schröck
We calculate the chirally improved (CI) Landau gauge quark propagator in two flavor lattice Quantum Chromodynamics and study thereon the effects of Dirac low-mode removal. The application of tree-level improvement of the propagator and tree-level correction of the lattice dressing functions removes the leading discretization artifacts. We find the dynamically generated mass in the infrared domain of the mass function to dissolve continuously with the reduction level and furthermore we observe strong suppression of the wave-function renormalization function for small momenta.
View original: http://arxiv.org/abs/1301.3089

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