Kantowski-Sachs bulk viscous string cosmological model in a scale covariant theory of gravitation

被引：0
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作者：
T. Ramprasad
R. L. Naidu
K. V. Ramana
机构：
[1] GMR Institute of Technology,Department of Basic Science and Humanities
[2] Govt.Poly technic,undefined
来源：
Astrophysics and Space Science | 2015年 / 359卷
关键词：
Scale covariant theory; Bulk viscous model; String model; Kantowski-Sachs model;
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摘要：
Spatially homogeneous and anisotropic Kantowski-Sachs space-time is considered in the scale covariant theory of gravitation proposed by Canuto et al. (Phys. Rev. Lett. 39:429, 1977) in the presence of bulk viscous fluid containing one dimensional cosmic strings. A determinate solution of the field equations of this theory is presented using the special law of variation proposed by Bermann (Nuovo Cimento B74:183, 1983). We have also used the proportionality of shear scalar to the scalar expansion of the space time. The solution obtained represents a bulk viscous string cosmological model in this theory. Some physical and kinematical properties of the model are also discussed.
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