期刊
NUCLEAR PHYSICS A
卷 982, 期 -, 页码 735-738出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysa.2018.10.012
关键词
Heavy Quark Potential; Quark-Gluon-Plasma; pNRQCD; Bayesian Inference; Pade Approximation; Spectral Functions
资金
- DFG [SFB 1225]
- DOE [DE-SC0012704]
- BMBF [05P15WOCA1]
We present our first results on a direct computation of the complex in-medium heavy quark potential from realistic lattice QCD simulations. Ensembles with N-tau = 12 from the HotQCD and TUMQCD collaboration offer unprecedented high statistics, those with N-tau = 16 unprecedented time resolution, making possible a robust extraction of the real part from the spectral functions of Wilson line correlators. To this end we deploy a combination of a Bayesian reconstruction (BR method), as well as a Pade-like approximation. We corroborate findings made on less realistic lattices that Re[V] smoothly transitions from a confining to a screened behavior at high temperatures and its values lie close to the color singlet free energies. A finite value of the Im[V] is observed in the quark-gluon-plasma phase.
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