Dynamical systems study of Chameleon scalar field

Abstract

The present work is an extensive study of the viable stable solutions of chameleon scalar field models leading to possibilities of an accelerated expansion of the universe. It is found that for various combinations of the chameleon field potential $V(\varphi )$ and the coupling $f(\varphi )$ of the chameleon field with matter, a stable solution for an accelerated expansion is quite possible. The investigation provides a diagnostics for the stability criteria for all sorts of combinations of $V(\varphi )$ and $f(\varphi )$.

19 pages, 11 figures, 8 tables

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• Scalar-Fluid interacting dark energy: cosmological dynamics beyond the exponential potential
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• Extended Phase Space Analysis of Interacting Dark Energy Models in Loop Quantum Cosmology
• Dynamical Systems Analysis of K-essence Model
• Dynamical systems analysis of phantom models
• Complete cosmic scenario in the Randall-Sundrum braneworld from the dynamical systems perspective
• Late time accelerated scaling attractors in DGP (Dvali-Gabadadze-Porrati) braneworld
• Dynamical System Analysis for Steep Potentials
• Chameleonic Theories: A Short Review
• Interacting dark sector: a dynamical system perspective
• Quintessence scalar field and cosmological constant: Dynamics of a multi-component dark energy model
• Dynamical systems analysis of a cosmological model with interacting Umami Chaplygin fluid in adiabatic particle creation mechanism: Some bouncing features
• Magnetized matter effects on dilaton photon mixing
• Cosmological Solutions of Chameleon Scalar Field Model
• Dynamical System Analysis Of Chameleon Mechanism in Brans-Dicke Scalar-Tensor Model
• Evolution of the early universe in Einstein-Cartan theory