  Due to the dynamical, real-time, nature of the phenomenon, the study of jet
quenching via lattice QCD simulations is not straightforward. In this
contribution, however, we show how one can extract information about the
momentum broadening of a hard parton moving in the quark-gluon plasma, from
lattice calculations. After discussing the basic idea (originally proposed by
Caron-Huot), we present a recent study, in which we estimated the jet quenching
parameter non-perturbatively, from the lattice evaluation of a particular set
of gauge-invariant operators.
