نتایج جستجو برای: bianchi type vi_0 cosmological models
تعداد نتایج: 2168932 فیلتر نتایج به سال:
The minisuperspace model of a Bianchi Type I universe with compact spatial sections is investigated. The classical solutions are brought onto a form were the difference between compact and infinite spatial sections are manifest. One of the features of the compact case is that it has a non-trivial moduli space. The solution space of the compact Bianchi Type I universe is 10 dimensional whereas t...
In this work, we investigate the anisotropic Bianchi type I cosmological model in chiral set-up a twofold manner. Firstly, consider quintessence plus [Formula: see text]-essence-like model, where two scalar fields but only one potential term is considered. Secondly, look at addition to terms are taken into account as well standard kinetic energy and mixed term. Regarding second it shown that po...
In the present paper, we considered Bianchi type-II space-time in presence of a macroscopic body self-creation theory formulated by Barber. The relation between metric coefficient and state equation has helped exact cosmological model theory. features, stability, some physical & kinematical properties obtained are also discussed.
Bianchi type-VI0 space time with strange quark matter attached to string cloud in Nordtvedt [1] general scalar tensor theory of gravitation with the help of a special case proposed by Schwinger [2] is obtained. The field equations have been solved by using the anisotropy feature of the universe in the Bianchi type-VI0 space time. Some important features of the model, thus obtained, have been di...
The Bianchi Type V Universe composed by diffuse matter is studied. We examine its anisotropic behaviour as well as the distortion it would cause to CMBR. Next the parameter region allowed by the present cosmological constraints is given. The gauge dependency of the temperature pattern, induced by the anisotropies, is excibited. Pacs numbers: 04.20.Jb , 98.80.Cq Typeset using REVTEX ∗E-mail addr...
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...
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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