Tübingen 2003 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 19: Theorie II
HK 19.5: Vortrag
Dienstag, 18. März 2003, 17:15–17:30, D
Finite and High Temperature Gluon Propagator in Landau Gauge Yang-Mills Theory — •Axel Maas1, Burghard Grüter2, Reinhard Alkofer2, and Jochen Wambach1 — 1Institute for Nuclear Physics, Darmstadt University of Technology, Schloßgartenstraße 9, D-64289 Darmstadt, Germany — 2Institute for Theoretical Physics, Tübingen University, Auf der Morgenstelle 14, D-72076 Tübingen, Germany
Yang-Mills theories undergo a deconfining phase transition at a critical temperature. In lattice calculations the temporal Wilson loop and Z3 order parameter show above this temperature a behavior typical of deconfinement. A quantity of interest in the study of this transition is the gluon propagator and its evolution with temperature. An overview of the current status of an investigation of the finite temperature gluon propagator in Landau gauge will be given. The analysis of the high temperature case will be discussed in more detail. The resulting Dyson-Schwinger-equations are compared to the corresponding ones of three-dimensional Yang-Mills theory. Under certain assumptions it is found that a kind of spatial ’confinement’ is still present, even at very high temperatures [1].
[1] A. Maas, B. Grüter, R. Alkofer, J. Wambach, hep-ph/0210178
Supported by the BMBF under grant 06DA917 and the European Graduate School Basel-Tuebingen (DFG contract GRK683).