Hydrodynamical Space-Time Evolution of the Central Region of Rapidities in Ultra-Relativistic Heavy Ion Collisions

摘要

The solutions of the hydrodynamic equations describing a longitudinally expanding quark-gluon plasma produced in central collisions of two large nuclei are investigated. It is argued that a fair description of the transverse flow of plasma is given - irrespective of the initial conditions - by the relativistic simple wave of Riemann, modulated by a factor resulting from cooling due to the longitudinal expansion of plasma. The role of fluctuations in the flow of plasma is also briefly discussed. (Atomindex citation 18:012093)