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

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• The Imperfect Fluid behind Kinetic Gravity Braiding
• Time dependent couplings in the dark sector: from background evolution to nonlinear structure formation
• Cosmographic Constraints and Cosmic Fluids
• Cosmological phase space analysis of the F (X) - V (phi) scalar field and bouncing solutions
• Testing Gravity Using Large-Scale Redshift-Space Distortions
• Shear and rotation in Chaplygin cosmology
• Nonlinear Chaplygin Gas Cosmologies
• Dynamics of cosmological scalar fields
• Scalar-Fluid interacting dark energy: cosmological dynamics beyond the exponential potential
• Observational constraints of a new unified dark fluid and the $H_0$ tension
• An extensive investigation of the Generalised Dark Matter model
• Unified Dark Energy and Dust Dark Matter Dual to Quadratic Purely Kinetic K-Essence
• Unified Superfluid Dark Sector
• Cosmological dynamics of scalar fields with kinetic corrections: Beyond the exponential potential
• Exact nonlinear inhomogeneities in $\Lambda$CDM cosmology
• Exact spherically-symmetric inhomogeneous model with n perfect fluids
• Note on the thermodynamics and the speed of sound of a scalar field
• Uncertainty on w from large-scale structure
• Does Quartessence Ease Tensions?
• A short review on clustering dark energy
• Extended family of generalized Chaplygin gas models
• Imprints of interacting dark energy on cosmological perturbations
• Spherical `Top-Hat' Collapse in general Chaplygin gas dominated universes
• Tomography from the Next Generation of Cosmic Shear Experiments for Viable f(R) Models
• A note on the relations between thermodynamics, energy definitions and Friedmann equations
• New Scalar Field Quartessence
• CMB-Galaxy correlation in Unified Dark Matter Scalar Field Cosmologies
• Gravity in mimetic scalar-tensor theories after GW170817
• $f\left(R,{\nabla }_{{\mu }_1}R,\dots ,{\nabla }_{{\mu }_1}\dots {\nabla }_{{\mu }_n}R\right)$ theories of gravity in Einstein frame: A higher order modified Starobinsky inflation model in the Palatini approach
• Large-scale structure in mimetic Horndeski gravity
• Dark sector unifications: dark matter-phantom energy, dark matter -- constant $w$ dark energy, dark matter-dark energy-dark matter
• Cosmological constraints on a unified dark matter-energy scalar field model with fast transition
• Inclusive Constraints on Unified Dark Matter Models from Future Large-Scale Surveys
• Unified Dark Matter, Dark Energy and Baryogenesis via a "Cosmological Wetting Transition''
• Realising Interactions Between Dark Matter and Dark Energy Using $k$-essence Cosmology
• Dark Energy, Dark Matter and Baryogenesis from a Model of a Complex Axion Field
• Testing a dissipative kinetic k-essence model
• Covariant formulation of refracted gravity
• The dynamics of three nearby E0 galaxies in refracted gravity
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• Complex Scalar fields in Scalar-Tensor and Scalar-Torsion theories
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• Anisotropic Conformal Dark Gravity on the Lorentz Tangent Bundle Spacetime
• Anisotropic Bouncing Scenario in $F(X)-V(\varphi )$ model
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• Wave Propagation in Modified Gravity
• Constraints on Metastable Dark Energy Decaying into Dark Matter
• Mimicking the LCDM model with Stealths
• Gravitational potential evolution in Unified Dark Matter Scalar Field Cosmologies: an analytical approach
• Early-Matter-Like Dark Energy and the Cosmic Microwave Background
• Analytic Study of Cosmological Perturbations in a Unified Model of Dark Matter and Dark Energy with a Sharp Transition
• Phase space analysis of the F (X) - V (ϕ) scalar field Lagrangian and scaling solutions in flat cosmology
• Dynamics and chaos in the unified scalar field cosmology II. System in a finite box
• Dark matter candidate induced by Horndeski theory: dark matter halo and cosmological evolution
• From Dark Radiation to Dark Energy: Unified Cosmological Evolution in K-essence Models
• Supplying Dark Energy from Scalar Field Dark Matter
• Modified scaling in $k$-essence model in interacting dark energy - dark matter scenario
• Phenomenology of Unified Dark Matter models with fast transition
• Geometric formulation of $k$-essence and late-time acceleration
• Dynamical friction shear and rotation in Chaplygin cosmology