Do we have any hope of detecting scattering between dark energy and baryons through cosmology?

Abstract

We consider the possibility that dark energy and baryons might scatter off each other. The type of interaction we consider leads to a pure momentum exchange, and does not affect the background evolution of the expansion history. We parametrize this interaction in an effective way at the level of Boltzmann equations. We compute the effect of dark energy-baryon scattering on cosmological observables, focusing on the Cosmic Microwave Background (CMB) temperature anisotropy power spectrum and the matter power spectrum. Surprisingly, we find that even huge dark energy-baryon cross-sections ${\sigma }_{xb}\sim \mathcal{O}(\mathrm{b})$, which are generically excluded by non-cosmological probes such as collider searches or precision gravity tests, only leave an insignificant imprint on the observables considered. In the case of the CMB temperature power spectrum, the only imprint consists in a sub-percent enhancement or depletion of power (depending whether or not the dark energy equation of state lies above or below $-1$) at very low multipoles, which is thus swamped by cosmic variance. These effects are explained in terms of differences in how gravitational potentials decay in the presence of a dark energy-baryon scattering, which ultimately lead to an increase or decrease in the late-time integrated Sachs-Wolfe power. Even smaller related effects are imprinted on the matter power spectrum. The imprints on the CMB are not expected to be degenerate with the effects due to altering the dark energy sound speed. We conclude that, while strongly appealing, the prospects for a direct detection of dark energy through cosmology do not seem feasible when considering realistic dark energy-baryon cross-sections. As a caveat, our results hold to linear order in perturbation theory.

15 pages, 7 figures. Title changed, minor modifications added comments on non-linearities. Version accepted for publication in MNRAS

References in corpus (64)

• Cosmology and the Fate of Dilatation Symmetry
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Dark Energy and the Accelerating Universe
• Ultralight scalars as cosmological dark matter
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• A Theory of Dark Matter
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• Beyond the Cosmological Standard Model
• The Effective Field Theory of Inflation
• Primordial Black Holes as Dark Matter
• Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report
• Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
• Dark Energy after GW170817: dead ends and the road ahead
• Strong constraints on cosmological gravity from GW170817 and GRB 170817A
• Constraints on the Self-Interaction Cross-Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657-5
• Implications of the Neutron Star Merger GW170817 for Cosmological Scalar-Tensor Theories
• The trouble with $H_0$
• Imperfect Dark Energy from Kinetic Gravity Braiding
• Can dark energy evolve to the Phantom?
• A search for ultra-light axions using precision cosmological data
• Early dark energy, the Hubble-parameter tension, and the string axiverse
• The DAMA/LIBRA apparatus
• Evading Equivalence Principle Violations, Cosmological and other Experimental Constraints in Scalar Field Theories with a Strong Coupling to Matter
• Measuring primordial non-gaussianity without cosmic variance
• CMB-S4 Science Book, First Edition
• Correlation of CMB with large-scale structure: I. ISW Tomography and Cosmological Implications
• Review of LHC Dark Matter Searches
• Mimetic gravity: a review of recent developments and applications to cosmology and astrophysics
• The Dynamics of Quintessence, The Quintessence of Dynamics
• Galileon Gravity in Light of ISW, CMB, BAO and $H_0$ data
• Effective Field Theory of Cosmic Acceleration: constraining dark energy with CMB data
• Interacting Dark Sector and Precision Cosmology
• Dark sector interaction: a remedy of the tensions between CMB and LSS data
• The status of varying constants: a review of the physics, searches and implications
• Phantom and non-phantom dark energy: The cosmological relevance of non-locally corrected gravity
• Vainshtein mechanism after GW170817
• Cosmological bounds on dark matter-neutrino interactions
• Constraining dark energy with cross-correlated CMB and Large Scale Structure data
• Constraining Dark Energy Anisotropic Stress
• New observational constraints on $f(R)$ gravity from cosmic chronometers
• The Parameterized Post-Friedmannian Framework for Interacting Dark Energy Theories
• Measuring the Speed of Dark: Detecting Dark Energy Perturbations
• Constraints on the Sound Speed of Dynamical Dark Energy
• Galilean Equivalence for Galactic Dark Matter
• Novel approach towards the large-scale stable Interacting Dark-Energy models and their Astronomical Bounds
• Braneworld models with a non-minimally coupled phantom bulk field: a simple way to obtain the -1-crossing at late times
• Constraining Disformally Coupled Scalar Fields
• Future CMB Constraints on Early, Cold, or Stressed Dark Energy
• Constraints on mediator-based dark matter and scalar dark energy models using $\sqrt{s}=13$ TeV $pp$ collision data collected by the ATLAS detector
• Scattering of Dark Matter and Dark Energy
• Hidden Negative Energies in Strongly Accelerated Universes
• Daily Modulation as a Smoking Gun of Dark Matter with Significant Stopping
• Microscopic and Macroscopic Behaviors of Palatini Modified Gravity Theories
• Observational constraints on dark matter-dark energy scattering cross section
• First results on low-mass dark matter from the CRESST-III experiment
• Simulating Momentum Exchange in the Dark Sector
• Linear scale bounds on dark matter--dark radiation interactions and connection with the small scale crisis of cold dark matter
• Higgs Dark Energy
• Mimicking dark matter in Horndeski gravity
• Observational Bounds on Modified Gravity Models
• Current constraints on early and stressed dark energy models and future 21 cm perspectives
• New class of biological detectors for WIMPs
• New Bounds on Dark Energy Induced Fifth Forces

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• The CIDER simulations: Nonlinear structure formation in the Constrained Interacting Dark Energy Scenario
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