Realistic in-medium heavy-quark potential from high statistics lattice QCD simulations
Peer reviewed, Journal article
Published version
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https://hdl.handle.net/11250/3046342Utgivelsesdato
2019Metadata
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Originalversjon
Petreczky, P., Rothkopf, A., & Weber, J. (2019). Realistic in-medium heavy-quark potential from high statistics lattice QCD simulations. Nuclear Physics A, 982, 735-738. 10.1016/j.nuclphysa.2018.10.012Sammendrag
We present our first results on a direct computation of the complex in-medium heavy quark potential from realistic lattice QCD simulations. Ensembles with Nτ = 12 from the HotQCD and TUMQCD collaboration offer unprecedented high statistics, those with Nτ = 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 Padé-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.