Equation of state for distributed mass quark matter

Abstract

We investigate how the QCD equation of state can be reconstructed by a continous mass distribution of non-interacting ideal components. We find that adjusting the mass scale as a function of the temperature leads to results which are conform to the quasiparticle model, but a temperature independent distribution also may fit lattice results. The fitted mass distribution tends to show a mass gap, supporting the physical picture of the quark coalescence in hadronization.

talk given at SQM2006, 8 pages, submitted to J.Phys.G

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• Pion and Kaon Spectra from Distributed Mass Quark Matter
• Nuclear and Quark Matter at High Temperature
• Shear viscosity over entropy density ratio with extended quasi-particles