Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Banerjee, Asit"'
Publikováno v:
Journal of Mathematical Physics 26, 2693 (1985)
Hydrodynamic self-similar solutions, as obtained by Chi [J. Math. Phys. 24, 2532 (1983)] have been generalized by introducing new variables in place of the old space and time variables. A systematic procedure of obtaining a complete set of solutions
Externí odkaz:
http://arxiv.org/abs/2101.09140
Publikováno v:
Pramana - J. Phys. 90 (2018) no.2, 19
Considering a homogeneous and isotropic universe characterized by the Friedmann-Lema\^itre-Robertson-Walker (FLRW) line element, in this work, we have prescribed a general formalism for the cosmological solutions when the equation of state of the cos
Externí odkaz:
http://arxiv.org/abs/1706.08145
Publikováno v:
Gen.Rel.Grav.40:1603-1607,2008
A model of an emergent universe is obtained in brane world. Here the bulk energy is in the form of cosmological constant, while the brane consists of a fluid satisfying an equation of state of the form $p_{b}={1/3} \rho_{b}$, which is effectively a r
Externí odkaz:
http://arxiv.org/abs/0711.4188
The usual brane world scenario with anti de Sitter bulk has been generalized by considering a general form of energy momentum tensor in the bulk. The modified Einstein equation on the brane has been constructed. Two examples have been cited of which,
Externí odkaz:
http://arxiv.org/abs/0707.0199
Publikováno v:
Grav.Cosmol.13:290-292,2007
A model of an emergent universe is obtained in brane world. Here the bulk energy is in the form of cosmological constant, while the brane consists of the Chaplygin gas with the modified equation of state such as $p=A\rho-B/\rho$. Initially the brane
Externí odkaz:
http://arxiv.org/abs/0705.3933
Publikováno v:
Grav.Cosmol.14:355-361,2008
The paper presents some solutions to the five dimensional Einstein equations due to a perfect fluid on the brane with pure dust filling the entire bulk in one case and a cosmological constant (or vacuum) in the bulk for the second case. In the first
Externí odkaz:
http://arxiv.org/abs/gr-qc/0609067
A dynamical symmetry for spherical collapse has been studied using a linear transformation of the initial data set (mass and kinetic energy function) and the area radius. With proper choice of the initial area radius, the evolution as well as the phy
Externí odkaz:
http://arxiv.org/abs/gr-qc/0602112
In the present work, inhomogeneous Tolman-Bondi type dust space-time is studied on the brane. There are two sets of solutions of the above model. The first solution represents either a collapsing model starting from an infinite volume at infinite pas
Externí odkaz:
http://arxiv.org/abs/gr-qc/0602068
Publikováno v:
Class.Quant.Grav. 21 (2004) 5609-5618
In this paper we have considered a model of modified Chaplygin gas and its role in accelerating phase of the universe. We have assumed that the equation of state of this modified model is valid from the radiation era to $\Lambda$CDM model. We have us
Externí odkaz:
http://arxiv.org/abs/gr-qc/0411015
Publikováno v:
Int.J.Mod.Phys. D13 (2004) 1073-1084
The generalized Szekeres family of solution for quasi-spherical space-time of higher dimensions are obtained in the scalar tensor theory of gravitation. Brans-Dicke field equations expressed in Dicke's revised units are exhaustively solved for all th
Externí odkaz:
http://arxiv.org/abs/gr-qc/0404089