Heavy Quark Interactions and Quarkonium Binding

We consider heavy quark interactions in quenched and unquenched lattice QCD. In a region just above the deconfinement point, non-Abelian gluon polarization leads to a strong increase in the binding. Comparing quark-antiquark and quark-quark interaction, the dependence of the binding on the separation distance

r

is found to be the same for the colorless singlet

Q\bar Q

and the colored anti-triplet

QQ

state. In a potential model description of in-medium

J/\Psi

behavior, this enhancement of the binding leads to a survival up to temperatures of 1.5

T_c

or higher/ it could also result in

J/\Psi

flow.

Note:

8 pages, 8 Figures/ invited talk at 'Strangeness in Quark Matter 2008', Beijing/China, to appear in the Proceedings

References(0)

Figures(8)

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