Fate of the initial state perturbations in heavy ion collisions. III. The second act of hydrodynamics
Fate of the initial state perturbations in heavy ion collisions. III. The second act of hydrodynamics
Hydrodynamical description of the "Little Bang" in heavy ion collisions is surprisingly successful, mostly due to the very small viscosity of the Quark-Gluon plasma. In this paper we systematically study the propagation of small perturbations, also treated hydrodynamically. We start with a number of known techniques allowing for analytic calculation …