Center vortices and the quark propagator in SU(2) gauge theory

Abstract

We study the behavior of the AsqTad quark propagator in Landau gauge on quenched SU(2) gauge configurations under the removal of center vortices. In contrast to recent results in SU(3), we clearly see the infrared enhancement of the mass function disappear if center vortices are removed, a sign of the intimate relation between center vortices and chiral symmetry breaking in SU(2) gauge-field theory. These results provide a benchmark with which to interpret the SU(3) results. In addition, we consider vortex-only configurations. On those, the quark dressing function behaves roughly as on the full configurations, and the mass function picks up an almost linear momentum dependence.

7 pages, 3 figures. Version to appear in PRD with slightly extended discussion in section V and 3 new references

References in corpus (4)

• Unquenching effects in the quark and gluon propagator
• On the interrelation between monopoles, vortices, topological charge and chiral symmetry breaking: an analysis using overlap fermions for SU(2)
• Relation between chiral symmetry breaking and confinement in YM-theories
• Once more on the interrelation between Abelian monopoles and P-vortices in SU(2) LGT

Cited by in corpus (10)

• Visualisation of Centre Vortex Structure
• Two-point functions of quenched lattice QCD in Numerical Stochastic Perturbation Theory. (II) The gluon propagator in Landau gauge
• Centre vortex geometry at finite temperature
• Numerical indication that center vortices drive dynamical mass generation in QCD
• QCD chiral symmetry restoration with a large number of quarks in a model with a confining propagator and dynamically massive gluons
• Propagators and topology
• Center vortices and the $\mathrm{SU}(3)$ conformal window
• Structure of center-vortex matter in SU(4) Yang-Mills theory
• Center vortices in the novel phase of staggered fermions
• Novel insight into centre-vortex geometry in four dimensions