English

Realistic in-medium heavy-quark potential from high statistics lattice QCD simulations

High Energy Physics - Lattice 2019-02-20 v1 High Energy Physics - Phenomenology Nuclear Theory

Abstract

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=12N_\tau=12 from the HotQCD and TUMQCD collaboration offer unprecedented high statistics, those with Nτ=16N_\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 Pad\'e-like approximation. We corroborate findings made on less realistic lattices that Re[V]{\rm 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]{\rm Im}[V] is observed in the quark-gluon-plasma phase.

Keywords

Cite

@article{arxiv.1810.02230,
  title  = {Realistic in-medium heavy-quark potential from high statistics lattice QCD simulations},
  author = {Peter Petreczky and Alexander Rothkopf and Johannes Weber},
  journal= {arXiv preprint arXiv:1810.02230},
  year   = {2019}
}

Comments

4 pages, 4 figures, talk given at the XXVIIth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions (Quark Matter 2018), Venice, Italy