PERFECT FLUID COSMOLOGICAL MODELS WITH TIME-VARYING CONSTANTS

Author:

BELINCHÓN JOSÉ ANTONIO1,CHAKRABARTY INDRAJIT2

Affiliation:

1. Grupo Inter-Universitario de Análisis Dimensional, Dept. Física ETS Arquitectura UPM Av., Juan de Herrera 4, Madrid 28040 España, Spain

2. Blk 278, #06-183, Toh Guan Road, Singapore 600278, Singapore

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.

Publisher

World Scientific Pub Co Pte Lt

Subject

Space and Planetary Science,Astronomy and Astrophysics,Mathematical Physics

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