Open Quantum Sytems and Effective Field Theories for hard probes of hot and/or dense medium

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Goal of the present research project is to use effective field theory methods to investigate the behaviour of heavy probes of a hot (and/or dense) plasma. In particular, building on our previous results, we want to develop an effective field theory description for multiscale systems in nonequilibrium evolution using an open quantum system framework. Applications regard the study of the heavy quarkonium evolution in the quark gluon plasma created in the heavy ion experiments, the transport properties, the nuclear modification factor and the thermalization process. Lattice QCD calculations of some transport coefficients are part of the project. These results will impact not only on some of the frontiers of strong interactions but also on the development of quantum field theory out of equilibrium. In future a similar framework may be used to address the propagation of nonrelativistic dark matter pairs (DM) in the early universe.