  Jet charge characterizes the electric charge distribution inside a jet. In
this talk we make the first theoretical study of jet charge in high-energy
nuclear collisions and calculate numerically the medium alternations of jet
charge due to parton energy loss in the quark-gluon plasma. The parton multiple
scattering in hot/dense QCD medium is simulated by a modified version of PYQUEN
Monte Carlo model with 3+1D ideal hydrodynamical evolution of the fireball. Our
preliminary results show that the averaged jet charge is significant modified
in A+A collisions relative to that in p+p. The different features of quark jet
charge and gluon jet charge in heavy-ion collisions, and the sensitivity of jet
charge modifications to flavour dependence of energy loss are observed, which
could then be used to discriminate quark and gluon jet as well as their energy
loss patterns in heavy-ion collisions.
