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String cosmological models with bulk viscosity in Nordtvedt's general scalar-tensor theory of gravitation | ||
| Journal of Theoretical and Applied Physics | ||
| مقاله 59، دوره 7، شماره 1، اسفند 2013 اصل مقاله (355.31 K) | ||
| شناسه دیجیتال (DOI): 10.1186/2251-7235-7-50 | ||
| نویسندگان | ||
Uma Maheswara Rao Velagapudi  ؛ Neelima Davuluri
| ||
| Department of Applied Mathematics, Andhra University | ||
| چکیده | ||
| AbstractWe have obtained and presented spatially homogeneous Bianchi types II, VIII, and IX string cosmological models with bulk viscosity in Nordtvedt's (Astrophys. J. 161:1059, 1970) general scalar-tensor theory of gravitation with the help of a special case proposed by Schwinger. It is observed that only the bulk viscous cosmological model exists in the case of Bianchi type IX universe. Some important features of the models, thus obtained, have been discussed. | ||
| کلیدواژهها | ||
| Bulk viscosity؛ Cosmic strings؛ Bianchi type II؛ VIII؛ and IX metrics؛ Nordtvedt' s general scalar؛ tensor theory | ||
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آمار تعداد مشاهده مقاله: 57 تعداد دریافت فایل اصل مقاله: 32 |
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