Bulk Viscous Solutions to the Field Equations and the Deceleration Parameter-Revisited
广义相对论与量子宇宙学
2014-11-17 v1
摘要
We utilise a form for the Hubble parameter to generate a number of solutions to the Einstein field equations with variable cosmological constant and variable gravitational constant in the presence of a bulk viscous fluid. The Hubble law utilised yields a constant value for the deceleration parameter. A new class of solutions is presented in the Robertson-Walker spacetimes. The coefficient of bulk viscosity is assumed to be a power function of the mass density. For a class of solutions, the deceleration parameter is negative which is consistent with the supernovae Ia observations.
引用
@article{arxiv.gr-qc/0207023,
title = {Bulk Viscous Solutions to the Field Equations and the Deceleration Parameter-Revisited},
author = {Anirudh Pradhan and Aotemshi I},
journal= {arXiv preprint arXiv:gr-qc/0207023},
year = {2014}
}
备注
Latex 15 pages, submitted to IJMPD