Details

Autor(en) / Beteiligte

• Bazavov, A.
• Brambilla, N.
• Petreczky, P.
• Vairo, A.
• Weber, J. H.

Titel

Color screening in ( 2 + 1 )-flavor QCD

Ist Teil von

• Physical review. D, 2018-09, Vol.98 (5), Article 054511

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We study correlation functions of spatially separated static quark-antiquark pairs in (2+1)-flavor QCD in order to investigate onset and nature of color screening at high temperatures. We perform lattice calculations in a wide temperature range, 140≤T≤5814  MeV, using the highly improved staggered quark action and several lattice spacings to control discretization effects. By comparing at high temperatures our lattice results to weak-coupling calculations, as well as to the zero temperature result for the energy of a static quark-antiquark pair, we observe that color screening sets in at rT≈0.3. Furthermore, we also observe that in the range 0.3≲rT≲0.6 weak-coupling calculations in the framework of suitable effective field theories provide an adequate picture of color screening.