Abstract: | 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. |