Abstract
New numerical solutions of 3+1D covariant kinetic theory are reported for nuclear collisions in the energy domain Ecm∼200 AGeV. They were obtained using the MPC 0.1.2 parton transport code employing high parton subdivision to retain Lorentz covariance. The solutions are compared to those of relativistic hydrodynamics employing Cooper–Frye isotherm freeze-out. The transport solutions follow a different dynamical path than hydrodynamics due to large dissipative effects when pQCD scattering rates and HIJING initial conditions are assumed. The transport freeze-out four-volume is sensitive to the reaction rates. The final transverse momentum distributions are found to deviate by up to an order of magnitude from those of Cooper–Frye frozen hydrodynamics.
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Gyulassy, M., Molnár, D. Covariant Non-Equilibrium Transport Theory Solutions for RHIC. Foundations of Physics 31, 875–894 (2001). https://doi.org/10.1023/A:1017555800429
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DOI: https://doi.org/10.1023/A:1017555800429