Perfect Fluid Cosmological Models with time-varying Constants

Abstract

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.

20 pages, RevTeX4

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Cited by in corpus (3)

• Dynamical analysis of the covarying coupling constants in scalar-tensor gravity
• Varying fundamental constants: a full covariant approach and cosmological applications
• Dark Energy and the Time Dependence of Fundamental Particle Constants