Effects of the quark field on the ghost propagator of Lattice Landau Gauge QCD

TL;DR

This paper investigates how the inclusion of quark fields influences the infrared behavior of ghost propagators in lattice Landau gauge QCD, comparing quenched and unquenched simulations for SU(2) and SU(3).

Contribution

It provides a comparative analysis of ghost propagator fluctuations, ghost condensate parameters, and Binder cumulants between quenched and unquenched lattice QCD configurations.

Findings

Differences in ghost propagator fluctuations between quenched and unquenched cases.

Variation in ghost condensate parameter $v$ with quark inclusion.

Changes in Binder cumulant indicating different ghost field dynamics.

Abstract

Infrared features of the ghost propagator of color diagonal and color antisymmetric ghost propagator of quenched SU(2) and quenched SU(3) are compared with those of unquenched Kogut-Susskind fermion SU(3) lattice Landau gauge. We compare 1) the fluctuation of the ghost propagator, 2) the ghost condensate parameter $v$ of the local composite operator (LCO) approach and 3) the Binder cumulant of color anti-symmetric ghost propagator between quenched and unquenched configurations.