Regular Article - Theoretical Physics
Relativistic diffusion model with nonlinear drift
Institut für Theoretische Physik der Universität Heidelberg, Philosophenweg 16, D-69120, Heidelberg, Germany
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Accepted: 10 February 2017
Published online: 27 February 2017
The nonequilibrium-statistical Relativistic Diffusion Model (RDM) is extended to include a nonlinear drift term such that its stationary solution agrees exactly with the thermal equilibrium distribution. The underlying Fokker-Planck equation cannot be solved analytically in this case and we present a numerical solution in rapidity space. The difference to the analytical RDM solution is discussed, and the numerical result is compared to data for net-proton rapidity distributions in GeV PbPb and 200 GeV AuAu collisions.
© SIF, Springer-Verlag Berlin Heidelberg, 2017