Non-Thermal Production of WIMPs and the Sub-Galactic Structure of the Universe

Abstract

There is increasing evidence that conventional cold dark matter (CDM) models lead to conflicts between observations and numerical simulations of dark matter halos on sub-galactic scales. Spergel and Steinhardt showed that if the CDM is strongly self-interacting, then the conflicts disappear. However, the assumption of strong self-interaction would rule out the favored candidates for CDM, namely weakly interacting massive particles (WIMPs), such as the neutralino. In this paper we propose a mechanism of non-thermal production of WIMPs and study its implications on the power spectrum. We find that the non-vanishing velocity of the WIMPs suppresses the power spectrum on small scales compared to what it obtained in the conventional CDM model. Our results show that, in this context, WIMPs as candidates for dark matter can work well both on large scales and on sub-galactic scales.

6 pages, 2 figures; typo corrected; to appear in PRL

References in corpus (6)

• Observational evidence for self-interacting cold dark matter
• The Cosmic Triangle: Revealing the State of the Universe
• The dearth of halo dwarf galaxies: is there power on short scales?
• The core density of dark matter halos: a critical challenge to the Lambda-CDM paradigm?
• Self-interacting Warm Dark Matter
• What if Dark matter is Bosonic and self-interacting

Cited by in corpus (138)

• Dark Matter Candidates from Particle Physics and Methods of Detection
• Interacting quintessence solution to the coincidence problem
• Halo Substructure And The Power Spectrum
• Dark matter production in the early Universe: beyond the thermal WIMP paradigm
• Stable Massive Particles at Colliders
• Neutralino with the Right Cold Dark Matter Abundance in (Almost) Any Supersymmetric Model
• Dark Matter Detection in the Light of Recent Experimental Results
• Direct, Indirect and Collider Detection of Neutralino Dark Matter In SUSY Models with Non-universal Higgs Masses
• Formation and structure of halos in a warm dark matter cosmology
• Multi-frequency analysis of neutralino dark matter annihilations in the Coma cluster
• How cold is cold dark matter? Small scales constraints from the flux power spectrum of the high-redshift Lyman-alpha forest
• Galactic Halos of Fluid Dark Matter
• Constraints on Warm Dark Matter from Cosmological Reionization
• Gravitino Dark Matter and Cosmological Constraints
• Dark Matter from Early Decays
• A Non-thermal WIMP Miracle
• Quintessential Haloes around Galaxies
• The effect of a late decaying scalar on the neutralino relic density
• SuperWIMP Solutions to Small Scale Structure Problems
• The cosmic ray positron excess and neutralino dark matter
• Non-thermal dark matter via Affleck-Dine baryogenesis and its detection possibility
• Detecting dark matter WIMPs in the Draco dwarf: a multi-wavelength perspective
• New Production Mechanism for keV Sterile Neutrino Dark Matter by Decays of Frozen-In Scalars
• Interacting Dark Matter disguised as Warm Dark Matter
• SUSY Dark Matter and Quintessence
• Dark Photon Dark Matter from a Network of Cosmic Strings
• Dark Matter Candidates - Axions, Neutralinos, Gravitinos, and Axinos
• Big Bang Nucleosynthesis with Long Lived Charged Massive Particles
• TeV gamma-rays and the largest masses and annihilation cross sections of neutralino dark matter
• Inflation, cold dark matter, and the central density problem
• Antiprotons from dark matter annihilation in the Galaxy: astrophysical uncertainties
• A Statistical Analysis of Supersymmetric Dark Matter in the MSSM after WMAP
• Model Independent Approach to Focus Point Supersymmetry: from Dark Matter to Collider Searches
• keV Sterile Neutrino Dark Matter from Singlet Scalar Decays: Basic Concepts and Subtle Features
• Thermalization after inflation and production of massive stable particles
• Solving the Cosmic Lithium Problems with Gravitino Dark Matter in the CMSSM
• Non-thermal Histories and Implications for Structure Formation
• Low energy antideuterons: shedding light on dark matter
• Baryogenesis, Electric Dipole Moments and Dark Matter in the MSSM
• Massive Particle Decay and Cold Dark Matter Abundance
• Neutralino Dark Matter Detection in Split Supersymmetry Scenarios
• Higgsino Dark Matter in a SUGRA Model with Nonuniversal Gaugino Masses
• Right-handed Sneutrinos as Nonthermal Dark Matter
• Cosmological constraints on quintessential halos
• The Role of Antimatter Searches in the Hunt for Supersymmetric Dark Matter
• Parameters in a Class of Leptophilic Dark Matter Models from PAMELA, ATIC and FERMI
• The observability of gamma-rays from neutralino annihilations in Milky Way substructure
• Modelling galaxy halos using dark matter with pressure
• Possible solution to the ${}^7$Li problem by the long lived stau
• Gamma Rays from Clusters and Groups of Galaxies: Cosmic Rays versus Dark Matter
• WIMP Dark Matter and Baryogenesis
• Cosmology with the Large Synoptic Survey Telescope: an Overview
• Dark radiation from particle decay: cosmological constraints and opportunities
• Linear cosmological constraints on 2-body decaying dark matter scenarios and the $S_8$ tension
• Features in Dark Energy Equation of State and Modulations in the Hubble Diagram
• Gravitino, Axino, Kaluza-Klein Graviton Warm and Mixed Dark Matter and Reionisation
• Solving the cosmic lithium problems with primordial late-decaying particles
• Ultra-cold WIMPs: relics of non-standard pre-BBN cosmologies
• Accurate estimate of the relic density and the kinetic decoupling in non-thermal dark matter models
• Constraining Non-thermal and Thermal properties of Dark Matter
• A Realistic Model for Spatial and Mass Distributions of Dark Halo Substructures: An Analytic Approach
• Structure of Dark Matter Halos in Warm Dark Matter models and in models with Long-Lived Charged Massive Particles
• Signatures of Self-Interacting Dark Matter in the Matter Power Spectrum and the CMB
• An inflation model with large variations in spectral index
• Shedding light on the small-scale crisis with CMB spectral distortions
• Higgs portal dark matter in non-thermal cosmologies
• Dark matter from late decays and the small-scale structure problems
• Looking for a Heavy Higgsino LSP in Collider and Dark Matter Experiments
• Probing Light Stop Pairs at the LHC
• Leptonic dark matter annihilation in the evolving universe: constraints and implications
• Can extra dimensional effects replace dark matter ?
• Natural Inflation, Planck Scale Physics and Oscillating Primordial Spectrum
• Electrophilic dark matter with dark photon: from DAMPE to direct detection
• Axino warm dark matter and ${\Omega }_b-{\Omega }_{DM}$ coincidence
• Inert-Sterile Neutrino: Cold or Warm Dark Matter Candidate
• Propagation of high-energy neutrinos in a background of ultralight scalar dark matter
• Gravitino Dark Matter from Inflaton Decay
• Double Type-II Seesaw, Baryon Asymmetry and Dark Matter for Cosmic e^\pm Excesses
• Simulations of galaxies formed in warm dark matter halos of masses at the filtering scale
• Nature of branon dark matter
• Pseudo-Nambu-Goldstone dark matter and two-Higgs-doublet models
• Dark Matter and the CACTUS Gamma-Ray Excess from Draco
• Baryogenesis and Gravitino Dark Matter in Gauge-Mediated Supersymmetry-Breaking Models
• Dark radiation and small-scale structure problems with decaying particles
• Axionic Mirage Mediation
• Non-Thermal Production of WIMPs, Cosmic $e^{\pm }$ Excesses and $\gamma$-rays from the Galactic Center
• A Left-Right Symmetric Model for Neutrino Masses, Baryon Asymmetry and Dark Matter
• Gamma rays and neutrinos from dark matter annihilation in galaxy clusters
• ATIC and PAMELA Results on Cosmic e^\pm Excesses and Neutrino Masses
• Structure formation on the brane: A mimicry
• Formulation and constraints on decaying dark matter with finite mass daughter particles
• Searching for Singlino-Higgsino Dark Matter in the NMSSM
• A Markov Chain Monte Carlo Study on Dark Matter Property Related to the Cosmic e${}^{\pm }$ Excesses
• Direct detection of neutralino dark mattter in non-standard cosmologies
• Looking for a heavy wino LSP in collider and dark matter experiments
• Bayesian analysis of the break in DAMPE lepton spectra
• Constraints on Dark Matter Annihilation Cross Section in Scenarios of Brane-World and Quintessence
• Fermionic partner of Quintessence field as candidate for dark matter
• Cosmology with Long-Lived Charged Massive Particles
• Dark matter production from cosmic necklaces
• Gamma rays from the neutralino dark matter annihilations in the Milky Way substructures
• Axinos in Cosmology and at Colliders
• Goldilocks Supersymmetry: Simultaneous Solution to the Dark Matter and Flavor Problems of Supersymmetry
• Confluence of Constraints in Gauge Mediation: The 125 GeV Higgs Boson and Goldilocks Cosmology
• The WIMP Paradigm: Theme and Variations
• Phenomenology of quintessino dark matter -- Production of NLSP particles
• Impact of dark matter self-scattering on its relic abundance
• Singlet extension of the MSSM as a solution to the small cosmological scale anomalies
• Higgsino Dark Matter in a Non-Standard History of the Universe
• Confusing the extragalactic neutrino flux limit with a neutrino propagation limit
• Statistics of Magnification Perturbations by Substructure in the Cold Dark Matter Cosmological Model
• Asymmetric Origin for Gravitino Relic Density in the Hybrid Gravity-Gauge Mediated Supersymmetry Breaking
• A model for mixed warm and hot right-handed neutrino dark matter
• Clumpiness enhancement of charged cosmic rays from dark matter annihilation with Sommerfeld effect
• Decaying Dark Matter in the Supersymmetric Standard Model with Freeze-in and Seesaw mechanims
• Constraints on Minimal SUSY models with warm dark matter neutralinos
• Gamma-rays From Warm WIMP Dark Matter Annihilation
• Dark Matter from Decaying Topological Defects
• Imprints of Non-thermal Wino Dark Matter on Small-Scale Structure
• Statistical characteristics of observed Ly-$\alpha$ forest and the shape of initial power spectrum
• Light cold dark matter from non-thermal decay
• Quintessence dissipative superattractor cosmology
• Future targets for light gauge bosons from cosmic strings
• Experimental signatures of non-standard pre-BBN cosmologies
• A Systematic Effective Operator Analysis of Semi-Annihilating Dark Matter
• SUSY dark matter --A collider Physicist's Perspective--
• Detecting the dark matter annihilation at the ground EAS detectors
• Messenger inflation in gauge mediation and superWIMP dark matter
• Constraining supersymmetry from the satellite experiments
• Warm and Cold Dark Matter in Bouncing Universe
• Inert sextuplet scalar dark matter at the LHC and future colliders
• Impact of the vector dark matter on polarization of the CMB photon
• Preheating and Dark Sector of Universe
• Gamma rays from dark matter annihilation in the Draco and observability at ARGO
• Astrophysical Constraints on Dark Matter
• Constraining decaying dark matter with BOSS data and the effective field theory of large-scale structures
• Perturbative Resonance during Dark Matter Production and Its Cosmological Implications
• Cosmological constraints on sterile neutrino Dark Matter production mechanisms