Regular Article - Theoretical Physics
Particlization in hybrid models
Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, D-60438, Frankfurt am Main, Germany
2 Department of Physics, Duke University, 27708-0305, Durham, NC, USA
Accepted: 20 September 2012
Published online: 28 November 2012
In hybrid models, which combine hydrodynamical and transport approaches to describe different stages of heavy-ion collisions, conversion of fluid to individual particles, particlization, is a non-trivial technical problem. We describe in detail how to find the particlization hypersurface in a 3+1 dimensional model, and how to sample the particle distributions evaluated using the Cooper-Frye procedure to create an ensemble of particles as an initial state for the transport stage. We also discuss the role and magnitude of the negative contributions in the Cooper-Frye procedure.
© SIF, Springer-Verlag Berlin Heidelberg, 2012