Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2005-08-03
Phys.Rev.Lett. 95 (2005) 221601
Physics
High Energy Physics
High Energy Physics - Lattice
4 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.95.221601
By using the method of center projection the center vortex part of the gauge field is isolated and its propagator is evaluated in the center Landau gauge, which minimizes the open 3-dimensional Dirac volumes of non-trivial center links bounded by the closed 2-dimensional center vortex surfaces. The center field propagator is found to dominate the gluon propagator (in Landau gauge) in the low momentum regime and to give rise to an OPE correction to the latter of ${\sqrt{\sigma}}/{p^3}$.The screening mass of the center vortex field vanishes above the critical temperature of the deconfinement phase transition, which naturally explains the second order nature of this transition consistent with the vortex picture. Finally, the ghost propagator of maximal center gauge is found to be infrared finite and thus shows that the coset fields play no role for confinement.
Langfeld Kurt
Reinhardt Hugo
Schulze Gunnar
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