Long-Distance Behavior of qbar{q} Color Dependent Potentials at Finite Temperature
Abstract
SU(3) heavy quark potentials at finite temperature are studied with quenched lattice QCD using the stochastic gauge-fixing method. In addition to the standard color average channel, we investigate q bar{q} potentials in singlet and octet channels. The singlet q bar{q} channel yields an attractive force, while the octet q bar{q} potential is repulsive; the corresponding color average channel also results in an attractive force. As the temperature increases, these forces become weak and their variations are very small; at T / Tc = 1.8 - 5.6, the singlet attractive force survives over R 1/T. The singlet and octet potentials calculated with this algorithm have a small gauge dependence when the gauge parameter α is changed from 0.6 to 1.3.
- Publication:
-
Progress of Theoretical Physics
- Pub Date:
- May 2004
- DOI:
- arXiv:
- arXiv:hep-lat/0404002
- Bibcode:
- 2004PThPh.111..733N
- Keywords:
-
- High Energy Physics - Lattice
- E-Print:
- 12 pages, 9 figures, typos corrected, to appear in Prog. Theor. Phys