Nuclear Physics Colloquium

Venue: Physics Building, Max-von-Laue-Str. 1, Seminar Room PHYS 2.116
Time: Thursday, December 01, 4:30 pm (s.t.)
Contact: hees@fias.uni-frankfurt.de

Tracing the QCD pressure

Andre Peshier (University of Cape Town)

Being interested in how a strongly coupled system approaches asymptotic freedom, we re-examine existing precision lattice QCD results for thermodynamic properties of the gluon plasma in a large temperature range. We discuss and thoroughly test the applicability of perturbative results, on which grounds we then infer that the pressure and other bulk properties approach the free limit somewhat slower than previously thought. Regarding Linde's famous argument on the "breakdown" of QCD perturbation theory, we also revise the first non-perturbative term in the weak-coupling expansion of the pressure.