We study the correlators of Polyakov loops, and the corresponding gauge invariant free energy of a static quark-Antiquark pair in 2+1 flavor QCD at finite temperature. Our simulations were carried out on Nt = 6, 8, 10, 12, 16 lattices using a Symanzik improved gauge action and a stout improved staggered action with physical quark masses. The free energies calculated from the Polyakov loop correlators are extrapolated to the continuum limit. For the free energies we use a two step renormalization procedure that only uses data at finite temperature. We also measure correlators with definite Euclidean time reversal and charge conjugation symmetry to extract two different screening masses, one in the magnetic, and one in the electric sector, to distinguish two different correlation lengths in the full Polyakov loop correlator. This conference contribution is based on the paper: JHEP 1504 (2015) 138.
|Original language||English (US)|
|Journal||Proceedings of Science|
|State||Published - 2015|
|Event||33rd International Symposium on Lattice Field Theory, LATTICE 2015 - Kobe, Japan|
Duration: Jul 14 2015 → Jul 18 2015
All Science Journal Classification (ASJC) codes