The quenching of jets (and high-p T particle spectra) observed in heavy-ion collisions is
interpreted as due to the energy lost by hard partons crossing the Quark Gluon Plasma.
Here we review recent efforts to include in its modeling important qualitative features of
QCD, like the correlations in multiple gluon emissions and the color-flow pattern in parton
branchings. In particular, the modification of color connections among the partons of a
shower developing in the presence of a medium is a generic occurrence accompanying …