2015/03/31 by G. Burgio, Giuseppe Burgio, Markus Quandt +5
Physics and Astronomy · #Coulomb #Deconfinement #Gauge theory #High-Energy Particle Collisions Research #Lattice (music) #Lattice field theory #Lattice gauge theory #Mathematical physics #Particle physics theoretical and experimental studies #Phase transition #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #String (physics) #Wilson loop #hep-lat #hep-th
paper · pdf · doi:10.1103/physrevd.92.034518
published as Phys. Rev. D 92, 034518 (2015) · 12 pages, 14 figures. Figures and changes in text added to match published version
arxiv created 2015/08/20 · openalex publication_date 2015/08/27 · arxiv updated 2015/09/02 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
From continuum studies it is known that the Coulomb string tension \ensuremathσC gives an upper bound for the physical (Wilson) string tension \ensuremathσW [D. Zwanziger, Phys. Rev. Lett. 90, 102001 (2003)]. How does such a relationship translate to the lattice, however? In this paper we give evidence that on the lattice, while the two string tensions are related at zero temperature, they decouple at finite temperature. More precisely, we show that on the lattice the Coulomb gauge confinement scenario is always tied to the spatial string tension, which is known to survive the deconfinement phase transition and to cause screening effects in the quark-gluon plasma. Our analysis is based on the identification and elimination of center vortices, which allows us to control the physical string tension and study its effect on the Coulomb gauge observables. We also show how alternative definitions of the Coulomb potential may sense the deconfinement transition; however, a true static Coulomb gauge order parameter for the phase transition is still elusive on the lattice.