Hydrodynamics of anisotropic quark and gluon fluids

Abstract

The recently developed framework of anisotropic hydrodynamics is generalized to describe the dynamics of coupled quark and gluon fluids. The quark and gluon components of the fluids are characterized by different dynamical anisotropy parameters. The dynamical equations describing such mixtures are derived from kinetic theory with the collisional kernel treated in the relaxation- time approximation allowing for different relaxation times for quarks and gluons. Baryon number conservation is enforced in the quark and anti-quark components of the fluid, but overall parton number non-conservation is allowed in the system. The resulting equations are solved numerically in the (0+1)-dimensional boost-invariant case at zero and finite baryon density.

10 pages, 7 figures; v2 - allows for different quark and gluon relaxation times, version published in PRC

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• Shear-bulk coupling in nonconformal hydrodynamics
• Anisotropic hydrodynamic modeling of 2.76 TeV Pb-Pb collisions
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