Quark antiquark energies and the screening mass in a Quark-Gluon plasma at low and high temperatures

We discuss quark antiquark energies and the screening mass in hot QCD using the non-perturbative lattice approach. For this purpose we analyze properties of quark antiquark energies and entropies at infinitely large separation of the quark antiquark pair at low and high temperatures. In the limit of...

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Bibliographic Details
Published in:arXiv.org 2005-12
Main Authors: Kaczmarek, O, Zantow, F
Format: Article
Language:English
Subjects:
Coupling
Flavor (particle physics)
Gluons
Phase transitions
Quantum chromodynamics
Quark-gluon plasma
Quarks
Screening
Specific heat
Temperature dependence
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Summary:We discuss quark antiquark energies and the screening mass in hot QCD using the non-perturbative lattice approach. For this purpose we analyze properties of quark antiquark energies and entropies at infinitely large separation of the quark antiquark pair at low and high temperatures. In the limit of high temperatures these energies and entropies can be related perturbatively to the temperature dependence of the Debye mass and the coupling. On the one hand our analysis thus suggests that the quark antiquark energies at (infinite) large distances are rather related to the Debye screening mass and the coupling than to the temperature dependence of heavy-light meson masses. On the other hand we find no or only little differences in all mass scales introduced by us when changing from quenched to 2-flavor QCD at temperatures which are only moderately above the phase transition.
ISSN:2331-8422