Dynamics of cosmological scalar fields

Abstract

The background dynamical evolution of a universe filled with matter and a cosmological scalar field is analyzed employing dynamical system techniques. After the phenomenology of a canonical scalar field with exponential potential is revised, square and square root kinetic corrections to the scalar field canonical Lagrangian are considered and the resulting dynamics at cosmological distances is obtained and studied. These noncanonical cosmological models imply new interesting phenomenology including early time matter dominated solutions, cosmological scaling solutions and late time phantom dominated solutions with dynamical crossing of the phantom barrier. Stability and viability issues for these scalar fields are presented and discussed.

18 pages, 20 figures

References in corpus (9)

• Dynamics of dark energy
• Can dark energy evolve to the Phantom?
• Dynamics of dark energy with a coupling to dark matter
• Quintom cosmologies admitting either tracking or phantom attractors
• Dynamical analysis of generalized Galileon cosmology
• Unified Dark Matter Scalar Field Models
• On the dynamics of a quadratic scalar field potential
• Phase-space analysis of a class of k-essence cosmology
• Dynamics of Dirac-Born-Infeld dark energy interacting with dark matter

Cited by in corpus (34)

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• Scalar-Fluid theories: cosmological perturbations and large-scale structure
• Teleparallel quintessence with a nonminimal coupling to a boundary term
• Testing spatial curvature and anisotropic expansion on top of the $\Lambda$CDM model
• Scalar-Fluid interacting dark energy: cosmological dynamics beyond the exponential potential
• Global stability analysis for cosmological models with non-minimally coupled scalar fields
• Early dark energy in $k$-essence
• Cosmological dynamics of scalar fields with kinetic corrections: Beyond the exponential potential
• Dark energy with a gradient coupling to the dark matter fluid: cosmological dynamics and structure formation
• The Einstein static universe in Scalar-Fluid theories
• Dynamical stability of K-essence field interacting non-minimally with a perfect fluid
• Ghost condensates and pure kinetic $k$-essence condensates in presence of field-fluid non-minimal coupling in the dark sector
• Stability analysis of f(Q) gravity models using dynamical systems
• Mapping Poincaré gauge cosmology to Horndeski theory for emergent dark energy
• Dynamical Analysis of Scalar Field Cosmologies with Spatial Curvature
• Qualitative behavior of cosmological models combining various matter fields
• Dynamical System Analysis of Quintessence Models with Exponential Potential -- Revisited
• Separatrices in the Hamilton-Jacobi Formalism of Inflaton Models
• Cosmological fluids with boundary term couplings
• Dynamical systems analysis of an interacting scalar field model in an anisotropic universe
• Dynamical evolution of quintessence cosmology in a physical phase space
• Constructing Viable Interacting Dark Matter and Dark Energy Models: A Dynamical Systems Approach
• Thermodynamics of scalar field models with kinetic corrections
• Gravitational Foundations and Exact Solutions in $n$-Dimensional Fractional Cosmology
• Cosmological dynamical systems of non-minimally coupled fluids and scalar fields
• A dynamical systems perspective on the thermodynamics of late-time cosmology
• Exponential Quintessence Model: Analytical Quantification of the Fine-Tuning Problem in Dark Energy
• Dynamical analysis of $k$-essence cosmology in the light of Supernova Ia observations
• Adaptive asymptotic solutions of inflationary models in the Hamilton-Jacobi formalism: Application to T-models
• Revisiting dynamics of interacting quintessence