Perfect Fluid Cosmological Models with time-varying Constants

Details Perfect Fluid Cosmological Models with time-varying Constants Perfect Fluid Cosmological Models with time-varying Constants

2004-04-09

arxiv.org/abs/gr-qc/0404046v1

Int.J.Mod.Phys.D12:1113-1129,2003

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, RevTeX4

Scientific paper

10.1142/S0218271803003724

In this paper, we study in detail a perfect fluid cosmological model with time-varying "constants" using dimensional analysis and the symmetry method. We examine the case of variable "constants" in detail without considering the perfect fluid model as a limiting case of a model with a causal bulk viscous fluid as discussed in a recent paper. We obtain some new solutions through the Lie method and show that when matter creation is considered, these solutions are physically relevant.

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