Journal
MODERN PHYSICS LETTERS A
Volume 35, Issue 12, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217732320500911
Keywords
Cosmology; gravitational decoupling; cosmic strings; anisotropy
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Funding
- Higher Education Commission, Islamabad, Pakistan through the Indigenous Ph.D. Fellowship, PhaseII, Batch-III
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This paper is devoted to formulating exact solutions of axially symmetric spacetime through gravitational decoupling technique. For this purpose, we first evaluate an exact solution in the framework of cosmic strings by assuming some additional constraints on the metric coefficients and extend it to obtain two concrete anisotropic cosmological models. We investigate energy conditions as well as the speed of sound constraint to ensure the physical viability of the developed solutions. It is concluded that both anisotropic models meet all the energy bounds as well as stability criterion. The expanding behavior of the universe is also confirmed through different cosmological parameters.
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