2004•理论物理通讯：英文版Requires access
Bianchi Type III String Cosmological Model with Bulk Viscosity
WANGXing-Xiang, Xing-Xiang
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Abstract
The Bianchi type Ⅲ cosmological model for a cloud string with bulk viscosity are presented. To obtaina determinate model, an equation of state p = κλ and a relation between metric potentials B = Cn are assumed. Thephysical and geometric aspects of the model are also discussed. The model describes a shearing non-rotating continuouslyexpanding universe with a big-bang start, and the relation between the coefficient of bulk viscosity and the energy densityis ζ∝1 p1/2.