| Bianchi Type Ⅲ String Cosmological Model with Bulk Viscosity |
| |
| 作者姓名： | WANGXing-Xiang |
| |
| 作者单位： | DepartmentofPhysics,AnhuiNormalUniversity,Wuhu241000,China |
| |
| 摘 要： | The Bianchi type Ⅲ cosmological model for a cloud string with bulk viscosity are presented. To obtain a determinate model, an equation of state ρ=kλ and a relation between metric potentials B = C^n are assumed. 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, and the relation between the coefficient of bulk viscosity and the energy density is ζ∝ρ^1/2.
|
| 关 键 词： | Bianchi Ⅲ型时空 弦宇宙模型 体积粘滞性 引力场 能量密度 爱因斯坦方程 |
| 收稿时间： | 2003-08-21 |
Bianchi Type III String Cosmological Model with Bulk Viscosity |
| |
| WANGXing-Xiang.Bianchi Type III String Cosmological Model with Bulk Viscosity[J].Communications in Theoretical Physics,2004,42(3):361-364. |
| |
| Authors: | WANG Xing-Xiang |
| |
| Institution: | Department of Physics, Anhui Normal University, Wuhu 241000, China |
| |
| Abstract: | The Bianchi type III cosmological model
for a cloud string with bulk
viscosity are presented. To obtain a determinate model, an equation
of state $\rho =k\lambda $ and a relation between metric potentials
$B=C^n$ are assumed. 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, and the
relation between the coefficient of bulk viscosity and the energy density
is $\zeta\propto\rho^{1/2 }$. |
| |
| Keywords: | string cosmological model Bianchi type III space-time bulk viscosity |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《理论物理通讯》浏览原始摘要信息 |
| 点击此处可从《理论物理通讯》下载免费的PDF全文 |
