Anisotropic universe with cosmic strings and bulk viscosity in a scalar–tensor theory of gravitation

2011 ◽  
Vol 335 (2) ◽  
pp. 635-638 ◽  
Author(s):  
V. U. M. Rao ◽  
G. Sree Devi Kumari ◽  
K. V. S. Sireesha
Keyword(s):  
Bulk Viscosity ◽  
Cosmic Strings ◽  
Anisotropic Universe ◽  
Scalar Tensor Theory ◽  
Tensor Theory ◽  
Theory Of Gravitation

scholarly journals Kantowski-Sachs String Cosmological Model with Bulk Viscosity in General Scalar Tensor Theory of Gravitation

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
V. U. M. Rao ◽  
D. Neelima
Keyword(s):  
Bulk Viscosity ◽  
Cosmological Models ◽  
Scalar Tensor Theory ◽  
New Class ◽  
Tensor Theory ◽  
Present Universe ◽  
General Scalar ◽  
Theory Of Gravitation ◽  
Spatially Homogeneous ◽  
Special Case

A new class of spatially homogeneous Kantowski-Sachs string cosmological models with bulk viscosity in Nordtvedt (1970) general scalar-tensor theory of gravitation with the help of a special case proposed by Schwinger (1970) is obtained. In this paper we have presented anisotropic as well as isotropic cosmological models. Some important features of the models, thus obtained, have been discussed. These exact models are new and more general and represent not only the early stages of evolution but also the present universe.

scholarly journals Plane Symmetric Solutions of a Scalar-Tensor Theory of Gravitation

1977 ◽  
Vol 30 (1) ◽  
pp. 109 ◽  
Author(s):  
DRK Reddy
Keyword(s):  
General Relativity ◽  
Empty Space ◽  
Scalar Fields ◽  
Scalar Tensor Theory ◽  
Field Equations ◽  
Plane Symmetric ◽  
Zero Mass ◽  
Tensor Theory ◽  
Special Cases ◽  
Theory Of Gravitation

Plane symmetric solutions of a scalar-tensor theory proposed by Dunn have been obtained. These solutions are observed to be similar to the plane symmetric solutions of the field equations corresponding to zero mass scalar fields obtained by Patel. It is found that the empty space-times of general relativity discussed by Taub and by Bera are obtained as special cases.

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