Abstract
Bianchi type-I string cosmological models are studied in Saez-Ballester theory of gravitation when the source for the energy momentum tensor is a viscous string cloud coupled to gravitational field. The bulk viscosity is assumed to vary with time and is related to the scalar expansion. The relationship between the proper energy density ρ and string tension density λ are investigated from two different cosmological models.
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Tripathy, S.K., Nayak, S.K., Sahu, S.K. et al. Time dependent viscous string cloud cosmological models. Astrophys Space Sci 323, 91–96 (2009). https://doi.org/10.1007/s10509-009-0045-3
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DOI: https://doi.org/10.1007/s10509-009-0045-3