Adjoint chromoelectric correlators relevant for quarkonium dynamics are calculated in quenched lattice QCD and found to equal the fundamental correlator times Casimir factors, confirming leading-order relations nonperturbatively.
Quarkonium propagation in the quark gluon plasma
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abstract
In relativistic heavy ion collisions at RHIC and the LHC, a quark gluon plasma (QGP) is created for a short duration of about 10fm/c. Quarkonia (bound states of $c\bar{c}$ and $b\bar{b}$) are sensitive probes of this phase on length scales comparable to the size of the bound states which are less than 1fm. Observations of quarkonia in these collisions provide us with a lot of information about how the presence of a QGP affects various quarkonium states. This has motivated the development of the theory of heavy quarks and their bound states in a thermal medium, and its application to the phenomenology of quarkonia in heavy ion collisions. We review some of these developments here.
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Lattice study of correlators of chromoelectric fields for heavy quarkonium dynamics in the quark-gluon plasma
Adjoint chromoelectric correlators relevant for quarkonium dynamics are calculated in quenched lattice QCD and found to equal the fundamental correlator times Casimir factors, confirming leading-order relations nonperturbatively.