Regular Article - Theoretical Physics
Heavy quarkonia in a medium as a quantum dissipative system: master-equation approach
Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501, Bielefeld, Germany
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Revised: 19 January 2012
Published online: 8 May 2012
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.
© Springer-Verlag / Società Italiana di Fisica, 2012