The European Physical Journal A

, Volume 31, Issue 4, pp 858–861 | Cite as

Q¯ modes in the Quark-Gluon Plasma

  • D. CabreraEmail author
  • R. Rapp
QNP 2006


We study the evolution of heavy quarkonium states with temperature in a Quark-Gluon Plasma (QGP) by evaluating an in-medium Q¯ T-matrix within a reduced Bethe-Salpeter equation in S- and P-wave channels. The interaction kernel is extracted from finite-temperature QCD lattice calculations of the singlet free energy of a Q¯ pair. Quarkonium bound states are found to gradually move across the Q¯ threshold after which they rapidly dissolve in the hot system. We calculate Euclidean-time correlation functions and compare to results from lattice QCD. We also study finite-width effects in the heavy-quark propagators.


25.75.Dw Particle and resonance production 12.38.Gc Lattice QCD calculations 24.85.+p Quarks, gluons, and QCD in nuclei and nuclear processes 25.75.Nq Quark deconfinement, quark-gluon plasma production, and phase transitions 


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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  1. 1.Cyclotron Institute and Physics DepartmentTexas A&M UniversityUSA

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