Rotation in an exact hydrodynamical model

Abstract

We study an exact and extended solution of the fluid dynamical model of heavy ion reactions and estimate the rate of slowing down of the rotation due to the longitudinal and transverse expansion of the system. The initial state parameters of the model are set on the basis of a realistic (3+1)-dimensional fluid dynamical calculation at TeV energies, where the rotation is enhanced by the buildup of the Kelvin-Helmholtz instability in the flow.