Constraining interacting dark energy with CMB and BAO future surveys

Abstract

In this paper, we perform a forecast analysis to test the capacity of future baryon acoustic oscillation (BAO) and cosmic microwave background (CMB) experiments to constrain phenomenological interacting dark energy models using the Fisher matrix formalism. We consider a Euclid-like experiment, in which BAO measurements is one of the main goals, to constrain the cosmological parameters of alternative cosmological models. Moreover, additional experimental probes can more efficiently provide information on the parameters forecast, justifying also the inclusion in the analysis of a future ground-based CMB experiment mainly designed to measure the polarization signal with high precision. In the interacting dark energy scenario, a coupling between dark matter and dark energy modifies the conservation equations such that the fluid equations for both constituents are conserved as the total energy density of the dark sector. In this context, we consider three phenomenological models which have been deeply investigated in literature over the past years. We find that the combination of both CMB and BAO information can break degeneracies among the dark sector parameters for all three models, although to different extents. We found powerful constraints on, for example, the coupling constant when comparing it with present limits for two of the models, and their future statistical 3-$\sigma$ bounds could potentially exclude the null interaction for the combination of probes that is considered. However, for one of the models, the constraint on the coupling parameter does not improve the present result (achieved using a large combination of surveys), and a larger combination of probes appears to be necessary to eventually claim whether or not interaction is favored in that context.

15 pages, 10 figures. Replaced to match published version

References in corpus (36)

• Dark Matter Candidates from Particle Physics and Methods of Detection
• Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
• Late-time cosmology with 21cm intensity mapping experiments
• Indications of a late-time interaction in the dark sector
• Determination of Dark Energy by the Einstein Telescope: Comparing with CMB, BAO and SNIa Observations
• Effects of the interaction between dark energy and dark matter on cosmological parameters
• Interacting Dark Energy and Dark Matter: observational Constraints from Cosmological Parameters
• Stability of the curvature perturbation in dark sectors' mutual interacting models
• Cosmological coincidence problem in interacting dark energy models
• Interacting models may be key to solve the cosmic coincidence problem
• Toward a solution of the coincidence problem
• Testing the interaction between dark energy and dark matter via latest observations
• The Growth of Structure in Interacting Dark Energy Models
• Observational constraints on the dark energy and dark matter mutual coupling
• Coupled dark matter-dark energy in light of near Universe observations
• Precision Epoch of Reionization studies with next-generation CMB experiments
• Constraining early and interacting dark energy with gravitational wave standard sirens: the potential of the eLISA mission
• Testing coupled dark energy models with their cosmological background evolution
• Constraining interacting dark energy models with latest cosmological observations
• Constraining a dark matter and dark energy interaction scenario with a dynamical equation of state
• Fisher Matrices and Confidence Ellipses: A Quick-Start Guide and Software
• Coupled dark energy with perturbed Hubble expansion rate
• Cosmological constraints on coupled dark energy
• Distinguishing interacting dark energy from wCDM with CMB, lensing, and baryon acoustic oscillation data
• Future CMB cosmological constraints in a dark coupled universe
• Yang-Mills condensate dark energy coupled with matter and radiation
• Cosmological constraints from the redshift dependence of the Alcock-Paczynski effect: application to the SDSS-III BOSS DR12 galaxies
• Constraining Modified Gravity with Euclid
• Future weak lensing constraints in a dark coupled universe
• Update on the BINGO 21cm intensity mapping experiment
• Cosmological model of the interaction between dark matter and dark energy
• Constraints on the dark matter and dark energy interactions from weak lensing bispectrum tomography
• CMB and matter power spectra with non-linear dark-sector interactions
• Attractor Solution in Coupled Yang-Mills Field Dark Energy Models
• Dark sectors of the Universe: A Euclid survey approach
• Elucidating Dark Energy with Future 21 cm Observations at the Epoch of Reionization

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• Reexploration of interacting holographic dark energy model: Cases of interaction term excluding the Hubble parameter