Un-screened forces in Quark-Gluon Plasma?

Abstract

We study the correlator of temporal Wilson lines at non-zero temperature in 2+1 flavor lattice QCD with the aim to define the heavy quark-antiquark potential at non-zero temperature. For temperatures $153\mathrm{MeV}\le T\le 352\mathrm{MeV}$ the spectral representation of this correlator is consistent with a broadened peak in the spectral function, position or width of which then defines the real or imaginary parts of the heavy quark-antiquark potential at non-zero temperature, respectively. We find that the potential's real part is not screened contrary to the widely-held expectations. We comment on how this fact may modify the picture of quarkonium melting in the quark-gluon plasma.

References in corpus (27)

• The equation of state in (2+1)-flavor QCD
• The chiral and deconfinement aspects of the QCD transition
• Heavy Ion Collisions: The Big Picture, and the Big Questions
• Properties and uses of the Wilson flow in lattice QCD
• Flavor Symmetry and the Static Potential with Hypercubic Blocking
• The QCD Equation of State with almost Physical Quark Masses
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• Real-time static potential in hot QCD
• Static quark-antiquark pairs at finite temperature
• Light hadrons with improved staggered quarks: approaching the continuum limit
• Complex Heavy-Quark Potential at Finite Temperature from Lattice QCD
• A novel Bayesian approach to spectral function reconstruction
• Static quark-antiquark potential in the quark-gluon plasma from lattice QCD
• The RHMC Algorithm for 2 Flavours of Dynamical Staggered Fermions
• Determination of alpha_s from the QCD static energy: an update
• Symanzik improvement of the gradient flow in lattice gauge theories
• Equation of State in 2+1 Flavor QCD at High Temperatures
• Quarkonium at finite temperature: Towards realistic phenomenology from first principles
• Color screening in (2+1)-flavor QCD
• $T$-matrix Approach to Quark-Gluon Plasma
• Determination of the QCD coupling from the static energy and the free energy
• Static quark anti-quark interactions at non-zero temperature from lattice QCD
• Nonperturbative potential for study of quarkonia in QGP
• A hard thermal loop benchmark for the extraction of the nonperturbative $Q\bar{Q}$ potential
• Color Screening in Quantum Chromodynamics
• Static Energy in ($2+1+1$)-Flavor Lattice QCD: Scale Setting and Charm Effects
• Static Potential At Non-zero Temperatures From Fine Lattices

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• In-medium bottomonium properties from lattice NRQCD calculations with extended meson operators
• Static force from generalized Wilson loops on the lattice using the gradient flow
• Thermal modifications of mesons and energy-energy correlators from real-time simulations of a $U(1)$ lattice gauge theory
• Influence of a nontrivial Polyakov loop on the quarkonium states
• Finite Temperature Quarkonia Spectral Functions in the Pseudoscalar Channel
• Wilson loops with neural networks