| The Universe With Bulk Viscosity |
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| 作者姓名： | Arbab I.Arbab |
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| 作者单位： | 中国人民解放军85医院,上海200052 |
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| 摘 要： | Exact solutions for a model with variable G,A and bulk viscosity are obtained,Inflationary solutions with constant(de Sitter-type )and variable energy density are found.An expanding anisotropic universe is found to isotropize during its expansion but a static universe cannot isotropize.The gravitational constant is found to increase with time and the cosmological constant decreases with time as A∝t^-2。
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| 关 键 词： | 宇宙学 宇宙参数 体积粘度 重力 各向异性 |
The Universe With Bulk Viscosity |
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| Arbab I.Arbab.The Universe With Bulk Viscosity[J].Chinese Journal of Astronomy and Astrophysics,2003,3(2):113-118. |
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| Authors: | Arbab IArbab |
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| Abstract: | Exact solutions for a model with variable G, A and bulk viscosity are obtained. Inflationary solutions with constant (de Sitter-type) and variable energy density are found. An expanding anisotropic universe is found to isotropize during its expansion but a static universe cannot isotropize. The gravitational constant is found to increase with time and the cosmological constant decreases with time as |
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| Keywords: | cosmology: theory - cosmological parameters |
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