Wilson Loop in Classical Lattice Gauge Theory and the Thermal Width of Heavy Quarkonium

Details Wilson Loop in Classical Lattice Gauge Theory and the Thermal Width of Heavy Quarkonium Wilson Loop in Classical Lattice Gauge Theory and the Thermal Width of Heavy Quarkonium

2007-10-02

arxiv.org/abs/0710.0504v1

PoSLAT2007:230,2007

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 3 figures, XXV International Symposium on Lattice Field Theory

Scientific paper

We present an estimate for the imaginary part of the recently introduced finite temperature real-time static potential. It can be extracted from the time evolution of the Wilson loop in classical lattice gauge theory. The real-time static potential determines, through a Schroedinger-type equation and a subsequent Fourier-transform of its solution, the spectral function of heavy quarkonium in finite-temperature QCD. We also compare the results of the classical simulations with those of Hard Thermal Loop improved simulations, as well as with analytic expectations based on resummed perturbation theory.

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