TITLE

Expanding, shearing and accelerating isotropic plane symmetric universe with conformal Kasner geometry

AUTHOR(S)
Hansraj, Sudan; Govender, Megandhren; Mewalal, Narenee
PUB. DATE
August 2018
SOURCE
Modern Physics Letters A;8/20/2018, Vol. 33 Issue 25, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We construct a model of a universe filled with a perfect fluid with isotropic particle pressure. The anisotropic plane symmetric Kasner spacetime is used as a seed metric and through a conformal mapping a perfect fluid is generated. The model is inhomogeneous, irrotational, shearing and accelerating. For negative time, the universe is expanding, while for positive time, it is collapsing. With the aid of graphical three-dimensional plots, it is established that the density and pressure hypersurfaces are smooth and singularity free. Additionally, the sound-speed index is computed and the fluid obeys the causality criterion. The non-static exact solution found may prove useful in the study of gravitational waves.
ACCESSION #
131198643

 

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