Cosmic strings and viscous matter in a Kantowski-Sachs universe
Abstract
The evolution of the scale factors in a matter-plus-string-driven Kantowski-Sachs cosmology is studied here using two specific equations of state. The growth rate and relative expansion rates of each scale factor are examined as a measure of the smoothing out of the initial anisotropy. The bulk and shear viscosity are treated as perturbations and the possible destabilizing properties of these viscous effects are considered.
- Publication:
-
Astronomische Nachrichten
- Pub Date:
- November 1992
- DOI:
- 10.1002/asna.2113130602
- Bibcode:
- 1992AN....313..321W
- Keywords:
-
- Cosmology;
- Equations Of State;
- Matter (Physics);
- String Theory;
- Viscosity;
- Anisotropy;
- Background Radiation;
- Universe;
- Astrophysics