Multiple Dark Matter as a self-regulating mechanism for dark sector interactions

Abstract

(Abridged) Present cosmological constraints and the absence of a direct detection and identification of any dark matter particle candidate leave room to the possibility that the dark sector of the Universe be actually more complex than it is normally assumed. In particular, more than one new fundamental particle could be responsible for the observed dark matter density in the Universe, and possible new interactions between dark energy and dark matter might characterize the dark sector. In the present work, we investigate the possibility that two dark matter particles exist in nature, with identical physical properties except for the sign of their coupling constant to dark energy. Extending previous works on similar scenarios, we study the evolution of the background cosmology as well as the growth of linear density perturbations for a wide range of parameters of such model. Interestingly, our results show how the simple assumption that dark matter particles carry a "charge" with respect to their interaction with the dark energy field allows for new long-range scalar forces of gravitational strength in the dark sector without conflicting with present observations both at the background and linear levels. Our scenario does not introduce new parameters with respect to the case of a single dark matter species for which such strong dark interactions have been already ruled out.

18 pages, 1 table, 9 figures. Invited paper for the special issue of Annalen der Physik on "Dark Matter" (Ed. Matthias Bartelmann and Volker Springel)

References in corpus (51)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• Particle Dark Matter: Evidence, Candidates and Constraints
• Cosmology and the Fate of Dilatation Symmetry
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• The Aquarius Project: the subhalos of galactic halos
• Chandra sample of nearby relaxed galaxy clusters: mass, gas fraction, and mass-temperature relation
• The Mass Function of an X-Ray Flux-Limited Sample of Galaxy Clusters
• Direct constraints on the dark matter self-interaction cross-section from the merging galaxy cluster 1E0657-56
• The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
• A Textbook Example of a Bow Shock in the Merging Galaxy Cluster 1E0657-56
• Interacting Dark Matter and Dark Energy
• Cosmological Constraints from the Clustering of the Sloan Digital Sky Survey DR7 Luminous Red Galaxies
• Can the clustered dark matter and the smooth dark energy arise from the same scalar field ?
• Very weak lensing in the CFHTLS Wide: Cosmology from cosmic shear in the linear regime
• Measuring the dark side (with weak lensing)
• Lyman-alpha constraints on warm and on warm-plus-cold dark matter models
• The Cosmological Constant Problem and Quintessence
• Properties of galaxy dark matter halos from weak lensing
• The Dark Matter Distribution in the Central Regions of Galaxy Clusters
• The Dark Matter Distribution in the Central Regions of Galaxy Clusters: Implications for CDM
• Measuring ${\Omega }_m$ with the ROSAT Deep Cluster Survey
• Dynamics of interacting dark energy
• Linear and non-linear perturbations in dark energy models
• Constraints on Omega_m, Omega_L, and Sigma_8, from Galaxy Cluster Redshift Distributions
• Hydrodynamical N-body simulations of coupled dark energy cosmologies
• The dark matter density profile of the lensing cluster MS2137-23: a test of the cold dark matter paradigm
• Constraints on Omega_m and sigma_8 from weak lensing in RCS fields
• Coupled and Extended Quintessence: theoretical differences and structure formation
• Growing Matter
• Observational constraints on an interacting dark energy model
• Cosmological Effects of a Class of Fluid Dark Energy Models
• Constraining Interactions in Cosmology's Dark Sector
• N-body simulations for coupled dark energy: halo mass function and density profiles
• N-Body Simulations for Coupled Scalar Field Cosmology
• Interacting Quintessence, Cosmic Acceleration and the Coincidence Problem
• Time dependent couplings in the dark sector: from background evolution to nonlinear structure formation
• Velocities as a probe of dark sector interactions
• Constraint on Coupled Dark Energy Models from Observations
• Unified Dark Matter in Scalar Field Cosmologies
• The CoDECS project: a publicly available suite of cosmological N-body simulations for interacting dark energy models
• Clarifying the effects of interacting dark energy on linear and nonlinear structure formation processes
• Mass functions in coupled Dark Energy models
• The Case for Omega_M = 0.33 +/- 0.035
• Sterile neutrinos as subdominant warm dark matter
• Do WMAP data favor neutrino mass and a coupling between Cold Dark Matter and Dark Energy?
• New interactions in the dark sector mediated by dark energy
• Strong lensing statistics and the power spectrum normalisation
• The Impact of Coupled Dark Energy Cosmologies on the High-Redshift Intergalactic Medium
• Modifying Gravity at Low Redshift

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• Unveiling the Dynamics of the Universe
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• Cosmological Simulations of Multi-Component Cold Dark Matter
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• Generalized dark energy interactions with multiple fluids
• Towards scaling cosmological solutions with full coupled Horndeski Lagrangian: the KGB model
• Structure formation in Multiple Dark Matter cosmologies with long-range scalar interactions
• Kinetically coupled dark energy
• DM haloes in the fifth-force cosmology
• The general form of the coupled Horndeski Lagrangian that allows cosmological scaling solutions
• Searching for the Dark Force with 21-cm Spectrum in Light of EDGES
• Linear Perturbation constraints on Multi-coupled Dark Energy
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• Testing Dark Matter Clustering with Redshift Space Distortions
• Supernova constraints on Multi-coupled Dark Energy
• Linear Density Perturbations in Multifield Coupled Quintessence
• Cosmic Degeneracies III: N-body Simulations of Interacting Dark Energy with Non-Gaussian Initial Conditions
• Cornering Colored Coannihilation
• The CIDER simulations: Nonlinear structure formation in the Constrained Interacting Dark Energy Scenario
• Cosmic microwave background constraints on coupled dark matter
• Kinetic coupled tachyon: A dynamical system analysis