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arXiv · 0711.0062

Anisotropic fluid with time dependent viscosity coefficients

Hristu Culetu
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Abstract

A spacetime endowed with an anisotropic fluid is proposed for the interior of a Schwarzschild black hole. The geometry has an instantaneous Minkowski form and is a solution of Einstein's equations with a stress tensor on the r.h.s. obeying all the energy conditions. The interior fluid is compressible, with time dependent shear and bulk viscosity coefficients. The energy density $ρ$ and the ''radial'' pressure $p$ observe the equation of state $p + ρ= 0$ (as for dark energy), with no pressures on $θ-$ and $ϕ-$ directions. However, the angular components of the viscous part of the stress tensor are nonvanishing and equals the energy density of the fluid.

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Hristu Culetu. 2008-01-31. Anisotropic fluid with time dependent viscosity coefficients. https://arxiv.org/abs/0711.0062

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