1109.4271 (Nicolas Borghini et al.)

Heavy quarkonia in a medium as a quantum dissipative system:
Master-equation approach    [PDF]

Nicolas Borghini, Clement Gombeaud

The problem of the evolution of a heavy quarkonium in a medium can be recast as that of a quantum dissipative system. Within the framework of the master-equation approach to open quantum systems, we consider the real-time dynamics of quarkonia. We find that in a plasma at fixed temperature, the populations of the various quarkonium states evolve together, while their momentum distribution satisfies a Fokker-Planck equation.

View original: http://arxiv.org/abs/1109.4271