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Bianchi Type-III String Cosmological Model With Bulk Viscosity and Magnetic Field |
| WANG Xing-Xiang |
| Department of Physics, Anhui Normal University, Wuhu 241000 |
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| Cite this article: |
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WANG Xing-Xiang 2006 Chin. Phys. Lett. 23 1702-1704 |
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Abstract The Bianchi type-III cosmological model for a cloud string in the presence of bulk viscosity and magnetic field are presented. To obtain the determinate model it is assumed that there is an equation of state ρ=kλ and the scalar of expansion is proportional to the shear scalar θ α σ, which leads to a relation between metric potentials B=mCn. The physical and geometric aspects of the model are also discussed. The model describes a shearing non-rotating continuously expanding universe with a big-bang start. In the absence of magnetic field, it reduces to the string model with bulk viscosity that was previously given in the literature.
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04.20.Jb
98.80.Cq
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Published: 01 July 2006
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| PACS: |
04.20.Jb
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(Exact solutions)
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98.80.Cq
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(Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.))
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