Unified Dark Matter Scalar Field Models

Abstract

In this work we analyze and review cosmological models in which the dynamics of a single scalar field accounts for a unified description of the Dark Matter and Dark Energy sectors, dubbed Unified Dark Matter (UDM) models. In this framework, we consider the general Lagrangian of k-essence, which allows to find solutions around which the scalar field describes the desired mixture of Dark Matter and Dark Energy. We also discuss static and spherically symmetric solutions of Einstein's equations for a scalar field with non-canonical kinetic term, in connection with galactic halo rotation curves.

57 pages, 6 figures, LaTeX file. Typos corrected; Added References; Revised according to reviewer's suggestions; Invited Review for the special issue "Focus Issue on Dark Matter" for Advances in Astronomy

References in corpus (28)

• Dynamics of dark energy
• Observation of an anomalous positron abundance in the cosmic radiation
• Can dark energy evolve to the Phantom?
• A new measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation
• Dynamics of interacting dark energy
• Does Bulk Viscosity Create a Viable Unified Dark Matter Model?
• Global topological k-defects
• Kinetic k-essence and Quintessence
• Inflation, dark matter and dark energy in the string landscape
• Unified Dark Matter in Scalar Field Cosmologies
• Tachyon dark energy models: dynamics and constraints
• Gauge k-vortices
• A k-essence Model Of Inflation, Dark Matter and Dark Energy
• Cosmological bounds on the equation of state of dark matter
• $\Lambda \alpha$DM: Observational constraints on unified dark matter with constant speed of sound
• A note on the equivalence of a barotropic perfect fluid with a K-essence scalar field
• Triple unification of inflation, dark matter, and dark energy using a single field
• Cosmo-dynamics and dark energy with a quadratic EoS: anisotropic models, large-scale perturbations and cosmological singularities
• Cosmological tachyon condensation
• Late universe dynamics with scale-independent linear couplings in the dark sector
• A note on perfect scalar fields
• The Homogeneous Scalar Field and the Wet Dark Sides of the Universe
• Affine parameterization of the dark sector: costraints from WMAP5 and SDSS
• Unified model of baryonic matter and dark components
• Inflation, Reheating and Dark Matter
• A brief note on how to unify dark matter, dark energy, and inflation
• Dynamics and chaos in the unified scalar field Cosmology
• The mass distribution in Spiral galaxies

Cited by in corpus (1)

• Exact nonlinear inhomogeneities in $\Lambda$CDM cosmology