Heavy quarkonia in a medium as a quantum dissipative system: Master equation approach

Sep, 2011
12 pages
Published in:
  • Eur.Phys.J.C 72 (2012) 2000
  • Published: May 8, 2012
e-Print:
Report number:
  • BI-TP-2011-031

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Abstract: (arXiv)
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.
Note:
  • 12 pages, 8 figures. Version 2 matches the published version
  • 25.75.Nq
  • 14.40.Pq
  • 12.38.Mh