X-fluid and viscous fluid in D-dimensional anisotropic integrable cosmology

Details X-fluid and viscous fluid in D-dimensional anisotropic integrable cosmology X-fluid and viscous fluid in D-dimensional anisotropic integrable cosmology

2000-12-30

arxiv.org/abs/gr-qc/0101005v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, Latex 2.09

Scientific paper

D-dimensional cosmological model describing the evolution of a perfect fluid with negative pressure (x-fluid) and a fluid possessing both shear and bulk viscosity in n Ricci-flat spaces is investigated. The second equations of state are chosen in some special form of metric dependence of the shear and bulk viscosity coefficients. The equations of motion are integrated and the dynamical properties of the exact solutions are studied. It is shown the possibility to resolve the cosmic coincidence problem when the x-fluid plays role of quintessence and the viscous fluid is used as cold dark matter.

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