Speaker
Description
Quarkonia are among the most studied probe of the quark-gluon plasma
created in relativistic heavy ion collisions. But a nonperturbative
theoretical formalism for quarkonia in plasma is difficult, and one
relies on an effective field theory formalism coupled with
lattice studies. If the system size is much less than the inverse
temperature, as is expected for bottomonia, the interaction of the
system with the medium can be approximated by a color electric field,
and the decay of the quarkonia can be studied as a transition
to an octet state through the interaction with the medium.
In an open quantum system framework,
such interactions are encapsulated in transport coefficients.
We will present results of a lattice study of the correlators relevant
for this process, at temperatures in the range 1-2 times the deconfinement
temperature, for a gluonic plasma. We will also discuss the difference
between this transport coefficient and the one used for the diffusion of
a heavy quark in the plasma.
