Long and short distance behavior of the imaginary part of the heavy-quark potential

Abstract

The imaginary part of the effective heavy-quark potential is related to the total in-medium decay width of heavy quark-antiquark bound states. We extract the static limit of this quantity using classical-statistical simulations of real-time Yang-Mills dynamics by measuring the temporal decay of Wilson loops. By performing the simulations on finer and larger lattices, we are able to show that the nonperturbative results follow the same form as the perturbative ones. For large quark-antiquark separations, we quantify the magnitude of the non-perturbative long-range corrections to the imaginary part of the heavy-quark potential. We present our results for a wide range of temperatures, lattice spacings, and lattice volumes. We also extract approximations for the short-distance behavior of the classical potential.

Talk given at the Virtual Tribute to Quark Confinement and the Hadron Spectrum (vConf21), Stavanger, Norway, August 2nd - 6th, 2021

References in corpus (8)

• Static quark-antiquark pairs at finite temperature
• The heavy-quark potential in an anisotropic plasma
• Quarkonium states in an anisotropic QCD plasma
• Thermal imaginary part of a real-time static potential from classical lattice gauge theory simulations
• Polyakov loop and correlator of Polyakov loops at next-to-next-to-leading order
• Nonperturbative potential for study of quarkonia in QGP
• Interaction potential between heavy $Q\bar{Q}$ in color octet configuration in QGP
• Proper static potential in classical lattice gauge theory at finite T