Anisotropic hydrodynamics for a mixture of quark and gluon fluids

A system of equations for anisotropic hydrodynamics is derived that describes a mixture of anisotropic quark and gluon fluids. The consistent treatment of the zeroth, first, and second moments of the kinetic equations allows us to construct a new framework with more general forms of the anisotropic phase-space distribution functions than used before. In this way, the main deficiencies of the previous formulations of anisotropic hydrodynamics for mixtures are overcome and a good agreement with the exact kinetic-theory results is obtained.

Figure 1

Comparison of the hydrodynamic and kinetic-theory results for the initial oblate-oblate configurations. A detailed description is given in the text.

Figure 2

The same as Fig. 1, but for the prolate-oblate configuration.

Figure 3

The same as Fig. 1, but for the prolate-prolate configuration.

Figure 4

Comparison of the results obtained with a zero vs a finite initial baryon density for the oblate-oblate configuration.