Anisotropic Bulk Viscous String Cosmological Model in a Scalar-Tensor Theory of Gravitation
Spatially homogeneous, anisotropic, and tilted Bianchi type-VI0 model is investigated in a new scalar-tensor theory of gravitation proposed by Saez and Ballester (1986) when the source for energy momentum tensor is a bulk viscous fluid containing one-dimensional cosmic strings. Exact solution of the...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2013/609807 |
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| author | D. R. K. Reddy Ch. Purnachandra Rao T. Vidyasagar R. Bhuvana Vijaya |
| author_facet | D. R. K. Reddy Ch. Purnachandra Rao T. Vidyasagar R. Bhuvana Vijaya |
| author_sort | D. R. K. Reddy |
| collection | DOAJ |
| description | Spatially homogeneous, anisotropic, and tilted Bianchi type-VI0 model is investigated in a new scalar-tensor theory of gravitation proposed by Saez and Ballester (1986) when the source for energy momentum tensor is a bulk viscous fluid containing one-dimensional cosmic strings. Exact solution of the highly nonlinear field equations is obtained using the following plausible physical conditions: (i) scalar expansion of the space-time which is proportional to the shear scalar, (ii) the barotropic equations of state for pressure and energy density, and (iii) a special law of variation for Hubble’s parameter proposed by Berman (1983). Some physical and kinematical properties of the model are also discussed. |
| format | Article |
| id | doaj-art-8bd6efd6620e421881290eefef0ea805 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-8bd6efd6620e421881290eefef0ea8052025-02-03T05:57:58ZengWileyAdvances in High Energy Physics1687-73571687-73652013-01-01201310.1155/2013/609807609807Anisotropic Bulk Viscous String Cosmological Model in a Scalar-Tensor Theory of GravitationD. R. K. Reddy0Ch. Purnachandra Rao1T. Vidyasagar2R. Bhuvana Vijaya3Department of Engineering Mathematics, MVGR College of Engineering, Vizianagaram 535001, IndiaDepartment of Engineering Mathematics, MVGR College of Engineering, Vizianagaram 535001, IndiaMiracle Educational Society Group of Institutions, Vizianagaram 535001, IndiaDepartment of Mathematics, JNTU College of Engineering, Anantapur 515002, IndiaSpatially homogeneous, anisotropic, and tilted Bianchi type-VI0 model is investigated in a new scalar-tensor theory of gravitation proposed by Saez and Ballester (1986) when the source for energy momentum tensor is a bulk viscous fluid containing one-dimensional cosmic strings. Exact solution of the highly nonlinear field equations is obtained using the following plausible physical conditions: (i) scalar expansion of the space-time which is proportional to the shear scalar, (ii) the barotropic equations of state for pressure and energy density, and (iii) a special law of variation for Hubble’s parameter proposed by Berman (1983). Some physical and kinematical properties of the model are also discussed.http://dx.doi.org/10.1155/2013/609807 |
| spellingShingle | D. R. K. Reddy Ch. Purnachandra Rao T. Vidyasagar R. Bhuvana Vijaya Anisotropic Bulk Viscous String Cosmological Model in a Scalar-Tensor Theory of Gravitation Advances in High Energy Physics |
| title | Anisotropic Bulk Viscous String Cosmological Model in a Scalar-Tensor Theory of Gravitation |
| title_full | Anisotropic Bulk Viscous String Cosmological Model in a Scalar-Tensor Theory of Gravitation |
| title_fullStr | Anisotropic Bulk Viscous String Cosmological Model in a Scalar-Tensor Theory of Gravitation |
| title_full_unstemmed | Anisotropic Bulk Viscous String Cosmological Model in a Scalar-Tensor Theory of Gravitation |
| title_short | Anisotropic Bulk Viscous String Cosmological Model in a Scalar-Tensor Theory of Gravitation |
| title_sort | anisotropic bulk viscous string cosmological model in a scalar tensor theory of gravitation |
| url | http://dx.doi.org/10.1155/2013/609807 |
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