From 100 kpc to 10 Gpc: Dark Matter self-interactions before and after DESI

Abstract

We consider Dark Matter self-interactions mediated by ultralight scalars. We show that effectively massless mediators lead to an enhancement of the matter power spectrum, while heavier mediators lead to a suppression, together with a feature around their Jeans scale. We derive the strongest present constraints by combining Planck and BOSS data. The recent DESI measurements of Baryon Acoustic Oscillations exhibit a mild $2\sigma$ preference for long-range self-interactions, as strong as $4$ per mille of the gravitational coupling. Full-shape analyses of forthcoming DESI and Euclid data will confirm or disprove such a hint.

5+8 pages, 8 figures; v2: some modifications to the text, all conclusions unchanged. Matches version published in PRD

References in corpus (47)

• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• The Cosmic Linear Anisotropy Solving System (CLASS) II: Approximation schemes
• Large-Scale Structure of the Universe and Cosmological Perturbation Theory
• Coupled Quintessence
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• Cold and Fuzzy Dark Matter
• Weak Gravitational Lensing of the CMB
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• Massive neutrinos and cosmology
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• Conservative Constraints on Early Cosmology: an illustration of the Monte Python cosmological parameter inference code
• Planck 2018 results. VIII. Gravitational lensing
• Cosmological Non-Linearities as an Effective Fluid
• The Effective Field Theory of Cosmological Large Scale Structures
• Euclid. I. Overview of the Euclid mission
• Interacting Dark Matter and Dark Energy
• A search for ultra-light axions using precision cosmological data
• The Cosmological Analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure
• Cosmological Parameters from the BOSS Galaxy Power Spectrum
• The WiggleZ Dark Energy Survey: Improved Distance Measurements to z = 1 with Reconstruction of the Baryonic Acoustic Feature
• DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars
• DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest
• Combining Full-Shape and BAO Analyses of Galaxy Power Spectra: A 1.6% CMB-independent constraint on H0
• The Lagrangian-space Effective Field Theory of Large Scale Structures
• Cosmology with massive neutrinos II: on the universality of the halo mass function and bias
• The Effective Field Theory of Large Scale Structures at Two Loops
• A new analysis of galaxy 2-point functions in the BOSS survey, including full-shape information and post-reconstruction BAO
• On the Renormalization of the Effective Field Theory of Large Scale Structures
• A Lagrangian effective field theory
• Limits on $w$CDM from the EFTofLSS with the PyBird code
• The Bispectrum in the Effective Field Theory of Large Scale Structure
• Cosmology with massive neutrinos I: towards a realistic modeling of the relation between matter, haloes and galaxies
• The Hubble Tension in Light of the Full-Shape Analysis of Large-Scale Structure Data
• Tidal Tails Test the Equivalence Principle in the Dark Sector
• Redshift-Space Distortions in Lagrangian Perturbation Theory
• A Consistent Effective Theory of Long-Wavelength Cosmological Perturbations
• The One-Loop Matter Bispectrum in the Effective Field Theory of Large Scale Structures
• Interpreting DESI 2024 BAO: late-time dynamical dark energy or a local effect?
• Precision Comparison of the Power Spectrum in the EFTofLSS with Simulations
• Cosmology with the Galaxy Bispectrum Multipoles: Optimal Estimation and Application to BOSS Data
• The BOSS bispectrum analysis at one loop from the Effective Field Theory of Large-Scale Structure
• Galaxy morphology rules out astrophysically relevant Hu-Sawicki $f(R)$ gravity
• Unveiling dark fifth forces with linear cosmology
• Unveiling dark forces with measurements of the Large Scale Structure of the Universe
• High redshift LBGs from deep broadband imaging for future spectroscopic surveys
• Coherent Self-Interactions of Dark Matter in the Bullet Cluster

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• The Effective Field Theory of Large Scale Structure for Mixed Dark Matter Scenarios
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