LRS Bianchi I model with constant deceleration parameter
نویسندگان
چکیده
منابع مشابه
Causal Bulk Viscous LRS Bianchi I Models With Variable Gravitational and Cosmological “Constant”
In this paper we have investigated an LRS Bianchi I anisotropic cosmological model of the universe by taking time varying G and Λ in the presence of bulk viscous fluid source described by full causal non-equilibrium thermodynamics. We obtain a cosmological constant as a decreasing function of time and for m,n > 0, the value of cosmological “constant” for this model is found to be small and posi...
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In this paper we have investigated an LRS Bianchi I anisotropic cosmological model of the universe by taking time varying G and Λ in the presence of bulk viscous fluid source described by full causal non-equilibrium thermodynamics. We obtain a cosmological constant as a decreasing function of time and for m,n > 0, the value of cosmological “constant” for this model is found to be small and posi...
متن کاملBulk Viscous Cosmological Models in General Relativity
A new class of exact solutions of Einstein’s field equations with bulk viscous fluid for an LRS Bianchi type-I spacetime is obtained by using deceleration parameter as variable. The value of Hubble’s constant H0 is found to be less than half for non-flat model and is equal to 1.3 for flat model which are of the physical interest. PACS No. : 04.20.-q, 98.80.-k
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ژورنال
عنوان ژورنال: General Relativity and Gravitation
سال: 2019
ISSN: 0001-7701,1572-9532
DOI: 10.1007/s10714-019-2650-y