Bianchi Type-I Bulk Viscous String Cosmological Model with a Dynamical Cosmological Term
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https://doi.org/10.58414/SCIENTIFICTEMPER.2026.17.4.31Keywords:
Bianchi type‑I cosmology, Bulk viscosity, String cosmological model, Dynamical cosmological constant, Einstein field equations, Anisotropic universeDimensions Badge
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The Einstein field equations with a cosmological constant are analyzed for a Bianchi type-I universe in the presence of bulk viscosity. The analysis assumes that: the bulk viscosity coefficient is directly proportional to the expansion scalar ; the expansion scalar is directly proportional to the shear scalar and the cosmological constant is directly proportional to the Hubble parameter . The physical and cosmological implications of these solutions are presented along with a discussion.Abstract
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