Bianchi Type I String Cosmological Models with Bulk Viscosity and Magnetic Field

Details Bianchi Type I String Cosmological Models with Bulk Viscosity and Magnetic Field Bianchi Type I String Cosmological Models with Bulk Viscosity and Magnetic Field

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.293..433w&link_type=abstract

Astrophysics and Space Science, v. 293, Issue 4, p. 433-440 (2004).

Mathematics

Logic

18

String Cosmological Model, Bianchi Type I, Space-Time, Bulk Viscosity, Magnetic Field

Scientific paper

Some locally rotationally symmetric (LRS) Bianchi type I cosmological models for a cloud string with bulk viscosity and magnetic field are presented. Where an equation of state ρ = kλ and a relation between metric potential R = AS n are considered. The solution describes a shearing and nonrotating model with a big bang start. In the absence of magnetic field it reduces to a string model with bulk viscosity, where the relation between the coefficient of bulk viscosity and energy density is ζ ∝ ρ1/2. After choosing k = k = {1 + n}/{1 - n}, it further reduces to a string model without viscosity and magnetic field.

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