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

本研究计划的目标是利用有效的场论方法来研究热（和/或致密）等离子体的重探针的行为。特别是，我们以前的结果的基础上，我们希望开发一个有效的场论描述的多尺度系统的非平衡演化使用开放的量子系统框架。应用于重离子实验中产生的夸克胶子等离子体中重夸克偶素的演化、输运性质、核修正因子和热化过程的研究。一些输运系数的晶格QCD计算是该项目的一部分。这些结果不仅将影响强相互作用的某些前沿领域，而且将影响非平衡态量子场论的发展。在未来，一个类似的框架可能会被用来解决早期宇宙中非相对论性暗物质对（DM）的传播。

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.