Influence of light quark loops on the Wigner phase with Dyson-Schwinger equations approach

Abstract

We study the influence of light quark loops on the Wigner phase by solving coupled Dyson-Schwinger equations for quark propagator and gluon propagator. We take the gluon propagator in the Nambu phase from $N_f$ = 2 unquenched lattice QCD and choose various phenomenological models for the quark-gluon vertex. The gluon propagator in Winger phase is assumed to be different from that in the Nambu phase only due to the vacuum polarization of the quark loop. We obtain the Wigner solution of the coupled equations, compared with that from solving only the equation of the quark propagator. We discussed the corrections by the light quark loops and the dependence on various models of the quark-gluon vertex.

12 pages, 8 figures

References in corpus (22)

• Lattice gluodynamics computation of Landau-gauge Green's functions in the deep infrared
• Baryons as relativistic three-quark bound states
• Phase diagram and critical endpoint for strongly-interacting quarks
• Hadron Properties and Dyson-Schwinger Equations
• The quark-gluon vertex in Landau gauge QCD: Its role in dynamical chiral symmetry breaking and quark confinement
• Indirect lattice evidence for the Refined Gribov-Zwanziger formalism and the gluon condensate $⟨A^2⟩$ in the Landau gauge
• Propagators and phase structure of Nf=2 and Nf=2+1 QCD
• Spectrum of light- and heavy-baryons
• Chiral and deconfinement transition from correlation functions: SU(2) vs. SU(3)
• Chiral and deconfinement transition from Dyson-Schwinger equations
• The quark-gluon vertex in Landau gauge bound-state studies
• Quark-gluon vertex in general kinematics
• Chemical potential and the gap equation
• Interface Effect in QCD Phase Transitions via Dyson-Schwinger Equation Approach
• On mass generation in Landau-gauge Yang-Mills theory
• Hybrid neutron stars with the Dyson-Schwinger quark model and various quark-gluon vertices
• Dyson-Schwinger Equation and Quantum Phase Transitions in Massless QCD
• The soft-gluon limit and the infrared enhancement of the quark-gluon vertex
• The Gluon Propagator with Two-loop Schwinger-Dyson Equations
• QCD phase transition and equation of state of stellar strong interaction matter via Dyson-Schwinger equation approach
• Dressed Quark Tensor Vertex and Nucleon Tensor Charge
• The rainbow modified-ladder approximation and degenerate pion