Complex Heavy-Quark Potential at Finite Temperature from Lattice QCD

Details Complex Heavy-Quark Potential at Finite Temperature from Lattice QCD Complex Heavy-Quark Potential at Finite Temperature from Lattice QCD

2011-08-07

arxiv.org/abs/1108.1579v2

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, 3 figures, to be published in PRL

Scientific paper

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 quark-gluon-plasma.

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