Complex HeavyQuark Potential at Finite Temperature from Lattice QCD
Abstract
We calculate for the first time the complex potential between a heavy quark and antiquark at finite temperature across the deconfinement transition in lattice QCD. The real and imaginary part of the potential at each separation distance r is obtained from the spectral function of the thermal Wilson loop. We confirm the existence of an imaginary part above the critical temperature T_{C}, which grows as a function of r and underscores the importance of collisions with the gluonic environment for the melting of heavy quarkonia in the quarkgluon plasma.
 Publication:

Physical Review Letters
 Pub Date:
 April 2012
 DOI:
 10.1103/PhysRevLett.108.162001
 arXiv:
 arXiv:1108.1579
 Bibcode:
 2012PhRvL.108p2001R
 Keywords:

 12.38.Gc;
 03.65.Ge;
 12.38.Mh;
 14.40.Pq;
 Lattice QCD calculations;
 Solutions of wave equations: bound states;
 Quarkgluon plasma;
 High Energy Physics  Lattice;
 High Energy Physics  Phenomenology;
 Nuclear Theory
 EPrint:
 4 pages, 3 figures, to be published in PRL