Deconfinement, center symmetry and the ghost propagator in Landau gauge pure SU(3) YangMills theory
Abstract
The temperature dependence of the Landau gauge ghost propagator is investigated in pure SU(3) YangMills theory with lattice QCD simulations. Its behavior around the confineddeconfined phase transition temperature, T_{c} ∼ 270 MeV, is investigated. The simulations show that in the deconfined phase, the ghost propagator is enhanced for small momenta, ≲ 1 GeV. Furthermore, the analysis of the spontaneous breaking of center symmetry on the ghost propagator is studied. Similarly as observed for the gluon propagator, the simulations result in a decoupling of the sectors where the phase of the Polyakov loop is either 0 or ±2π/3 sectors, with the latter remaining indistinguishable. The results point to the possible use of the ghost propagator as an "order parameter" for the confineddeconfined phase transition.
 Publication:

Journal of High Energy Physics
 Pub Date:
 May 2024
 DOI:
 10.1007/JHEP05(2024)164
 arXiv:
 arXiv:2307.08662
 Bibcode:
 2024JHEP...05..164P
 Keywords:

 Correlation Functions;
 Lattice QCD;
 NonZero Temperature and Density;
 High Energy Physics  Lattice;
 High Energy Physics  Phenomenology