May 13 – 19, 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

Quantum and Classical Dynamics of Heavy Quarks in a Quark-Gluon Plasma

May 14, 2018, 5:10 PM
Sala Mosaici-2, 3rd Floor (Palazzo del Casinò)

Sala Mosaici-2, 3rd Floor

Palazzo del Casinò

Parallel Talk Quarkonia Quarkonia


Miguel Angel Escobedo Espinosa (University of Jyväskylä)


Heavy quarkonium related observables are very useful to obtain information about the medium created in relativistic heavy ion collisions. In recent years the theoretical description of quarkonium in a medium has moved towards a more dynamical picture in which decay and recombination processes are very important. In this talk we will discuss the equations that describe the evolution of the heavy quarks reduced density matrix in different approximations, highlighting the color dynamics that is absent in the Abelian case, and we will study their semi-classical limit. This will allow us to obtain stochastic equations (similar to Langevin or Boltzmann equations) that can be useful to obtain phenomenological predictions. We will observe that the region of validity of the Langevin-like or Boltzmann-like equations in QCD is much smaller than in the corresponding QED case. The reason for this can be understood by studying how differently the free energy evolves in these two theories. This observation will allow us to propose an equation with a small computational cost that captures many of the essential features of quarkonium evolution in a QCD plasma.

These results are based on [1] and on work in preparation.

[1]-Quantum and Classical Dynamics of Heavy Quarks in a Quark-Gluon Plasma. ArXiv:1711.10812. J-P. Blaizot and M. A. Escobedo.

Centralised submission by Collaboration Presenter name already specified
Content type Theory

Primary author

Miguel Angel Escobedo Espinosa (University of Jyväskylä)


Jean-Paul Blaizot (Institut de Physique Théorique CEA/CNRS)

Presentation materials