Null test for interactions in the dark sector

Abstract

Since there is no known symmetry in Nature that prevents a non-minimal coupling between the dark energy (DE) and cold dark matter (CDM) components, such a possibility constitutes an alternative to standard cosmology, with its theoretical and observational consequences being of great interest. In this paper we propose a new null test on the standard evolution of the dark sector based on the time dependence of the ratio between the CDM and DE energy densities which, in the standard $\Lambda$CDM scenario, scales necessarily as $a^{-3}$. We use the latest measurements of type Ia supernovae, cosmic chronometers and angular baryonic acoustic oscillations to reconstruct the expansion history using model-independent Machine Learning techniques, namely, the Linear Model formalism and Gaussian Processes. We find that while the standard evolution is consistent with the data at $3\sigma$ level, some deviations from the $\Lambda$CDM model are found at low redshifts, which may be associated with the current tension between local and global determinations of $H_0$.

arXiv comment15 pages, 12 figures

References in corpus (44)

• Dynamics of dark energy
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• Coupled Quintessence
• Constraints on the redshift dependence of the dark energy potential
• A 6% measurement of the Hubble parameter at $z\sim 0.45$: direct evidence of the epoch of cosmic re-acceleration
• Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements
• Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z$\sim$2
• Improved constraints on the expansion rate of the Universe up to z~1.1 from the spectroscopic evolution of cosmic chronometers
• Conservative Constraints on Early Cosmology: an illustration of the Monte Python cosmological parameter inference code
• Dark Energy
• Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant
• Age-dating Luminous Red Galaxies observed with the Southern African Large Telescope
• Reconstruction of dark energy and expansion dynamics using Gaussian processes
• Aspects of the cosmological "coincidence problem"
• Dynamics of interacting dark energy
• $H_0$ from cosmic chronometers and Type Ia supernovae, with Gaussian Processes and the novel Weighted Polynomial Regression method
• Nonparametric Dark Energy Reconstruction from Supernova Data
• Cosmic variance and the measurement of the local Hubble parameter
• A new, precise measurement of the primordial abundance of Deuterium
• Evidence for a Lower Value for $H_0$ from Cosmic Chronometers Data?
• Nonparametric Reconstruction of the Dark Energy Equation of State from Diverse Data Sets
• The length of the low-redshift standard ruler
• Tracing The Sound Horizon Scale With Photometric Redshift Surveys
• Angular Baryon Acoustic Oscillation measure at z=2.225 from the SDSS quasar survey
• Baryon Acoustic Oscillations from the SDSS DR10 galaxies angular correlation function
• The impact of the cosmic variance on $H_0$ on cosmological analyses
• Cosmological constraints on parametrized interacting dark energy
• An Updated Tomographic Analysis of the Integrated Sachs-Wolfe Effect and implications for Dark Energy
• Model-independent reconstruction of the linear anisotropic stress $\eta$
• A cosmological concordance model with dynamical vacuum term
• Gaussian processes reconstruction of dark energy from observational data
• Constructing a cosmological model-independent Hubble diagram of type Ia supernovae with cosmic chronometers
• Using a phenomenological model to test the coincidence problem of dark energy
• Null tests of the standard model using the linear model formalism
• Non-parametric reconstruction of cosmological matter perturbations
• Physical constraints on interacting dark energy models
• CMB and matter power spectra with non-linear dark-sector interactions
• Cosmological constraints on the gas depletion factor in galaxy clusters
• Coupling dark energy to dark matter inhomogeneities
• Reconstruction of cosmological matter perturbations in Modified Gravity
• Baryonic matter perturbations in decaying vacuum cosmology
• Viscous dark fluid Universe: a unified model of the dark sector?
• Interactions in the dark sector of the Universe
• Unified models of the cosmological dark sector

Cited by in corpus (34)

• Late universe decaying dark matter can relieve the H_0 tension
• Nonlinear interacting cosmological models after Planck 2018 legacy release and the $H_0$ tension
• Listening to the sound of dark sector interactions with gravitational wave standard sirens
• What can Machine Learning tell us about the background expansion of the Universe?
• Cosmological constraints on late-universe decaying dark matter as a solution to the $H_0$ tension
• Constraints on interacting dark energy models through cosmic chronometers and Gaussian process
• Dark degeneracy I: Dynamical or interacting dark energy?
• Novel null tests for the spatial curvature and homogeneity of the Universe and their machine learning reconstructions
• Neural Network Reconstruction of Late-Time Cosmology and Null Tests
• Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
• Reconstruction of the dark sectors' interaction: A model-independent inference and forecast from GW standard sirens
• Evidence for cosmic acceleration with next-generation surveys: A model-independent approach
• A model-independent reconstruction of dark sector interactions
• Euclid: Forecast constraints on consistency tests of the $\Lambda$CDM model
• Possible Hints of Sterile Neutrinos in Recent Measurements of the Hubble Parameter
• The Hubble constant tension with next-generation galaxy surveys
• Stability analysis and constraints on interacting viscous cosmology
• Inferring galaxy dark halo properties from visible matter with Machine Learning
• Kinematic Constraints on Spatial Curvature from Supernovae Ia and Cosmic Chronometers
• Improved null tests of $\Lambda$CDM and FLRW in light of DESI DR2
• A test of the standard dark matter density evolution law using galaxy clusters and cosmic chronometers
• Testing the $\Lambda$CDM paradigm with growth rate data and machine learning
• A first model-independent radial BAO constraint from the final BOSS sample
• An estimate of the dark matter density from galaxy clusters and supernovae data
• One-parameter dynamical dark-energy from the generalized Chaplygin gas
• Probing the dark matter density evolution law with large scale structures
• J-PLUS DR3: Galaxy-Star-Quasar classification
• Generalized Model of Interacting Dark Energy and Dark Matter : Phase Portrait Analysis of Evolving Universe
• Unveiling the Universe with Emerging Cosmological Probes
• Non-parametric reconstruction of the fine structure constant with galaxy clusters
• New tests of dark sector interactions from the full-shape galaxy power spectrum
• Forecast constraints on null tests of the $\Lambda$CDM model with SPHEREx
• Spatial Curvature and Large Scale Lorentz Violation
• The $H_0$ and $S_8$ tensions necessitate early and late time changes to $\Lambda$CDM