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Seminar in Hadronic PhysicsThermodynamics of large Nf at finite chemical potential for weak and strong couplingsAndreas IppInstitute for Nuclear Theory, TrentoResummation schemes for the entropy of hot QCD can drastically improve the poor convergence properties of strict perturbation theory. We test the non-perturbative Phi-derivable two-loop approximation, which resums the physics of hard thermal loops (HTL), in the limit of large flavor number (Nf) where the entropy and the pressure can be calculated exactly for a wide range of couplings. The exact result for the entropy is remarkably well reproduced by the HTL resummed theory for a natural choice of the renormalization scale, and this up to large values of the coupling.
Friday, November 25th 2005, 14:00
Ernest Rutherford Physics Building, R.E. Bell Conference Room (room 103) |