Classical Strongly Coupled QGP I: The Model and Molecular Dynamics Simulations

Details Classical Strongly Coupled QGP I: The Model and Molecular Dynamics Simulations Classical Strongly Coupled QGP I: The Model and Molecular Dynamics Simulations

2006-01-09

arxiv.org/abs/nucl-th/0601029v1

Phys.Rev.C74:044908,2006

Physics

Nuclear Physics

Nuclear Theory

11 pages, 14 figures

Scientific paper

10.1103/PhysRevC.74.044908

We propose a model for the description of strongly interacting quarks and gluon quasiparticles at $T=(1-3)T_c$, as a classical and nonrelativistic colored Coulomb gas. The sign and strength of the inter-particle interactions are fixed by the scalar product of their classical {\it color vectors} subject to Wong's equations. The model displays a number of phases as the Coulomb coupling is increased ranging from a gas, to a liquid, to a crystal with antiferromagnetic-like color ordering. We analyze the model using Molecular Dynamics (MD) simulations and discuss the density-density correlator in real time. We extract pertinent decorrelation times, diffusion and viscosity constants for all phases. The classical results when extrapolated to the sQGP suggest that the phase is liquid-like, with a diffusion constant $D\approx 0.1/T$ and a bulk viscosity to entropy density ratio $\eta/s\approx 1/3$.

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