Seminar in Hadronic Physics

Interfaces between hydrodynamics and transport for heavy ion collisions

Dmytro Oliinychenko

Lawrence Berkeley National Lab

Hybrid (hydrodynamics + transport) approaches have been very successful describing observables at highest RHIC and at LHC energies. To search for the critical point and phase transition of hadronic matter, it is tempting to apply them also at low and intermediate energies, for RHIC Beam Energy Scan program, FAIR, NICA and JPARC. I will discuss several aspects of applying hybrid approaches at intermediate energies: initial state thermalization, negative Cooper-Frye contributions at particlization, as well as sampling particles with event-by-event conservation laws. A possible alternative to hybrid approaches - “thermal bubbles” model - will be proposed. In this model only transport approach is used and in the regions of high density one performs forced thermalization.