Work

Heavy quark potentials in quenched QCD at high temperature

Year: 2000

Type: article

Abstract: Heavy quark potentials are investigated at high temperatures. The temperature range covered by the analysis extends from $T$ values just below the deconfinement temperature up to about ${4T}_{c}$ in the deconfined phase. We simulated the pure gauge sector of QCD on lattices with temporal extents of 4, 6, and 8, with spatial volumes of ${32}^{3}.$ On the smallest lattice a tree level improved action was employed, while in the other two cases the standard Wilson action was used. Below ${T}_{c}$ we find a temperature-dependent logarithmic term contributing to the confinement potential, and observe a string tension which decreases with rising temperature but retains a finite value at the deconfinement transition. Above ${T}_{c}$ the potential is Debye screened; however, simple perturbative predictions do not apply.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.62.034021

Authors: Olaf Kaczmarek, Frithjof Karsch, Edwin Laermann, Martin Lütgemeier

Institutions: Bielefeld University, University of Tsukuba, National Institute for Subatomic Physics

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green