SCALAR FIELD COSMOLOGIES WITH PERFECT FLUID IN ROBERTSON-WALKER METRIC

1995/06/07 by Luis P. Chimento, LUIS P. CHIMENTO, Alejandro S. Jakubi +1 · 5 citations
Engineering · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmological constant #Cosmological model #Cosmology and Gravitation Theories #Curvature #Friedmann equations #Homogeneous #Material Science and Thermodynamics #Metric (unit) #Perfect fluid #Scalar (mathematics) #Scalar field #gr-qc

paper · pdf · doi:10.1142/s0218271896000084

published as Int.J.Mod.Phys. D5 (1996) 71-84 · 19 pages, LaTeX

arxiv created 1995/06/07 · openalex publication_date 1996/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Several isotropic, homogeneous cosmological models containing a self-interacting minimally coupled scalar field, a perfect fluid source and cosmological constant are solved. New exact, asymptotically stable solutions with an inflationary regime or a final Friedmann stage are found for some simple, interesting potentials. It is shown that the fluid and the curvature may determine how these models evolve for large times.

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• Unified models of inflation and quintessence
• Bianchi type I cosmologies in arbitrary dimensional dilaton gravities
• Decoupling of the general scalar field mode and the solution space for Bianchi type I and V cosmologies coupled to perfect fluid sources
• Variable cosmological term Λ ( t ) \varLambda(t)
• Cosmology with a variable Chaplygin gas