Speaker
Mr
Johannes Heinrich Weber
(Technische Universität München)
Description
We study correlation functions of static quark antiquark pair in spatial separation in 2+1 flavor QCD in order to better understand the nature of color screening at high temperatures. We performed lattice calculations in a wide temperature range 140 MeV < T < 5.8 GeV using the highly improved staggered quark (HISQ) action and several lattice spacings to control discretization effects. From the entropy of static quarks we derive a scheme-independent deconfinement temperature and study its relation to chiral symmetry restoration. By comparing our lattice results to the weak coupling calculations as well as to the zero temperature result on the energy of static quark anti-quark pair we show that color screening sets in at distances rT ~ 0.3. We also conclude that in the distance range 0.3 < rT < 0.6 the weak coupling approach provides adequate picture for color screening.
Author
Mr
Johannes Heinrich Weber
(Technische Universität München)
Co-authors
Alexei Bazavov
(University of California/University of Iowa)
Peter Petreczky Petreczky
(BNL)
