Qualitative behavior of cosmological models combining various matter fields

Abstract

The late time accelerated expansion of the universe can be realized using scalar fields with given self-interacting potentials. Here we consider a straightforward approach where a three cosmic fluid mixture is assumed. The fluids are standard matter perfect fluid, dark matter, and a scalar field with the role of dark energy. A dynamical system analysis is developed in this context. A central role is played by the equation of state ${\omega }_{eff}$ which determines the acceleration phase of the models. Determining the domination of a particular fluid at certain stages of the universe history by stability analysis allows, in principle, to establish the succession of the various cosmological eras.

arXiv comment18 pages, 7 figures, accepted in IJMPA

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Cited by in corpus (6)

• Stability analysis for cosmological models in $f(R)$ gravity using dynamical system analysis
• The Classical and Loop Quantum Cosmology Phase Space of Interacting Dark Energy and Superfluid Dark Matter
• Stability analysis of f(Q) gravity models using dynamical systems
• Cosmological dynamics of f(R) models in dynamical system analysis
• Qualitative behaviour of higher-curvature gravity with boundary terms i.e the f(Q) gravity models by dynamical system analysis
• Generic autonomous system approach to interacting dark energy models