Abstract
We have investigated two stiff-fluid models in which the material distribution is that of viscous fluid. In the first model, the coefficient of shear viscosity is assumed to be constant while in the second model the coefficient of shear viscosity is proportional to the rate of expansion in the model. The paper also discusses some physical and geometrical aspects of the model. The behaviour of the model in absence of viscosity is also discussed.
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Bali, R., Jain, D.R. Viscous fluid universe filled with stiff fluid in general relativity. Astrophys Space Sci 185, 211–222 (1991). https://doi.org/10.1007/BF00643189
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DOI: https://doi.org/10.1007/BF00643189