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Bulk viscous plane-symmetric cosmological model in Lyra’s Geometry and General Relativity Theory |
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PP: 5-10 |
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Author(s) |
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E. A. Hegazy,
M. Abdel-Megied,
A. Gedamy,
M. Abdelgaber,
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Abstract |
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| In relativity theory and Lyra manifold, we present the viscosity’s effect on the universe’s thermodynamic functions. We model the universe using by plane-symmetric model. The Einstein field equations’ solution is obtained by considering that the expansion
scalar θ of the space-time is proportional to the component σ 1 of the shear tenor σ j . For the universe, we investigate and studied the 1i
thermodynamic functions of it. The time component introduced by Lyra in the displacement vector is defined as a viscosity term to restore the consistency of the conservation equation of the momentum tensor [ T j = 0]. The geometrical and physical properties are
i;j
studied for the obtained models. |
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