Latest documents http://publikationen.ub.uni-frankfurt.de/index/index/ Fri, 29 Apr 2011 15:27:17 +0200 Fri, 29 Apr 2011 15:27:17 +0200 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/17226 We study the kinetic and chemical equilibration in 'infinite' parton-hadron matter within the Parton-Hadron-String Dynamics transport approach, which is based on a dynamical quasiparticle model for partons matched to reproduce lattice-QCD results – including the partonic equation of state – in thermodynamic equilibrium. The 'infinite' matter is simulated within a cubic box with periodic boundary conditions initialized at different baryon density (or chemical potential) and energy density. The transition from initially pure partonic matter to hadronic degrees of freedom (or vice versa) occurs dynamically by interactions. Different thermody-namical distributions of the strongly-interacting quark-gluon plasma (sQGP) are addressed and discussed. Vitalii Ozvenchuk; Elena L. Bratkovskaya; Olena Linnyk; Mark I. Gorenstein; Wolfgang Cassing article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/17226 Fri, 29 Apr 2011 15:27:17 +0200 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/6242 The interplay of charmonium production and suppression in In+In and Pb+Pb reactions at 158 AGeV and in Au+Au reactions at sqrt(s)=200 GeV is investigated with the HSD transport approach within the hadronic comover model' and the QGP melting scenario'. The results for the J/Psi suppression and the Psi' to J/Psi ratio are compared to the recent data of the NA50, NA60, and PHENIX Collaborations. We find that, at 158 AGeV, the comover absorption model performs better than the scenario of abrupt threshold melting. However, neither interaction with hadrons alone nor simple color screening satisfactory describes the data at sqrt(s)=200 GeV. A deconfined phase is clearly reached at RHIC, but a theory having the relevant degrees of freedom in this regime (strongly interacting quarks/gluons) is needed to study its transport properties. Elena L. Bratkovskaya; Olena Linnyk; Wolfgang Cassing; Horst Stöcker article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/6242 Fri, 13 Mar 2009 09:25:31 +0100