Abstract： Some locally rotationally symmetric Bianchi type-I cosmological solutions for a cloud string with bulk viscosity are presented. In the first case, an equation of state ρ = kλ and the relation between metric potentials R = ASn are considered, and the solution represents shearing non-rotating model with the bulk viscosity ∝ ρ1/2, where ρ is the rest energy density of the cloud of strings with particles attached to them, λ is the tension density of the cloud of strings, is the coefficient of the bulk viscosity, R and S are only the functions of time t, while A and k are constant. In the second case, the constant coefficient of bulk viscosity is considered.
(Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.))
引用本文:
WANG Xing-Xiang. Bianchi Type-I Cosmology with Cosmic String and Bulk Viscosity
[J]. 中国物理快报, 2003, 20(10): 1674-1677.
WANG Xing-Xiang. Bianchi Type-I Cosmology with Cosmic String and Bulk Viscosity
. Chin. Phys. Lett., 2003, 20(10): 1674-1677.
2003, Vol. 20 
