Dark sector interactions and the curvature of the Universe in light of Planck's 2018 data

Abstract

We investigate the observational viability of a class of interacting dark energy (iDE) models in the light of the latest Cosmic Microwave Background (CMB), type Ia supernovae (SNe) and SH0ES Hubble parameter measurements. Our analysis explores the assumption of a non-zero spatial curvature, the correlation between the interaction parameter $\alpha$ and the current expansion rate $H_0$, and updates the results reported in \cite{micol}. Initially, assuming a spatially flat universe, the results show that the best-fit of our joint analysis clearly favours a positive interaction, i.e., an energy flux from dark matter to dark energy, with $\alpha \approx 0.2$, while the non-interacting case, $\alpha =0$, is ruled out by more than $3\sigma$ confidence level. On the other hand, considering a non-zero spatial curvature, we find a slight preference for a negative value of the curvature parameter, which seems to relax the correlation between the parameters $\alpha$ and $H_0$, as well as between $H_0$ and the normalization of the matter power spectrum on scales of 8$h^{-1}$ Mpc (${\sigma }_8$). Finally, we discuss the influence of considering the SH$0$ES prior on $H_0$ in the joint analyses, and find that such a choice does not change considerably the standard cosmology predictions but has a significant influence on the results of the iDE model.

arXiv comment11 pages, 2 figures

References in corpus (54)

• An alternative to quintessence
• The Cosmic Linear Anisotropy Solving System (CLASS) II: Approximation schemes
• Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
• In the Realm of the Hubble tension $-$ a Review of Solutions
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
• Planck 2018 results. V. CMB power spectra and likelihoods
• Early Dark Energy Can Resolve The Hubble Tension
• Unification of Dark Matter and Dark Energy: the Inhomogeneous Chaplygin Gas
• The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch
• Conservative Constraints on Early Cosmology: an illustration of the Monte Python cosmological parameter inference code
• Planck 2018 results. VIII. Gravitational lensing
• The trouble with $H_0$
• Planck 2015 results. XI. CMB power spectra, likelihoods, and robustness of parameters
• The Hubble Hunter's Guide
• Planck evidence for a closed Universe and a possible crisis for cosmology
• One percent determination of the primordial deuterium abundance
• Curvature tension: evidence for a closed universe
• KiDS+VIKING-450: Cosmic shear tomography with optical+infrared data
• The Revival of the Unified Dark Energy-Dark Matter Model ?
• Cosmological consequences of a Chaplygin gas dark energy
• Concordance and Discordance in Cosmology
• Interacting scenarios with dynamical dark energy: observational constraints and alleviation of the $H_0$ tension
• A Simple Phenomenological Emergent Dark Energy Model can Resolve the Hubble Tension
• The evidence for a spatially flat Universe
• Late universe decaying dark matter can relieve the H_0 tension
• Can the $H_0$ tension be resolved in extensions to $\Lambda$CDM cosmology?
• Tension between the power spectrum of density perturbations measured on large and small scales
• High-redshift objects and the generalized Chaplygin gas
• Quantifying tensions in cosmological parameters: Interpreting the DES evidence ratio
• Gauge-invariant analysis of perturbations in Chaplygin gas unified models of dark matter and dark energy
• Implications of a transition in the dark energy equation of state for the $H_0$ and ${\sigma }_8$ tensions
• Cosmological constraints on a decomposed Chaplygin gas
• 2021-$H_0$ Odyssey: Closed, Phantom and Interacting Dark Energy Cosmologies
• Evidence for Emergent Dark Energy
• Looking for interactions in the cosmological dark sector
• Updating constraints on f(T) teleparallel cosmology and the consistency with Big Bang Nucleosynthesis
• Addressing the cosmological $H_0$ tension by the Heisenberg uncertainty
• Connecting early and late epochs by f(z)CDM cosmography
• A cosmological concordance model with dynamical vacuum term
• The $H_0$ and ${\sigma }_8$ tensions and the scale invariant spectrum
• Metastable Dark Energy with Radioactive-like Decay
• Primordial gravitational waves and the H0-tension problem
• Testing the consistency between cosmological data: the impact of spatial curvature and the dark energy EoS
• Information Gains from Cosmic Microwave Background Experiments
• Chaplygin gas with non-adiabatic pressure perturbations
• Observational tests of non-adiabatic Chaplygin gas
• Revisiting Metastable Dark Energy and Tensions in the Estimation of Cosmological Parameters
• Non-adiabatic Chaplygin gas
• J-PAS: forecasts on interacting vacuum energy models
• Quantum mechanical look at the radioactive-like decay of metastable dark energy
• Model-independent constraints on modified gravity from current data and from the Euclid and SKA future surveys
• The evolution of the FRW universe with decaying metastable dark energy --- a dynamical system analysis
• On the concordance of cosmological data in the case of the generalized Chaplygin gas

Cited by in corpus (17)

• Challenges for $\Lambda$CDM: An update
• Cosmological direct detection of dark energy: non-linear structure formation signatures of dark energy scattering with visible matter
• Early and late time cosmology: the $f(R)$ gravity perspective
• Nonsingular Cosmology from an Interacting Vacuum
• A new Parametrization for Bulk Viscosity Cosmology as Extension of the $\Lambda$CDM Model
• Cosmological constraints on time-varying cosmological terms: A study of FLRW universe models with $\Lambda (t)$CDM cosmology
• Testing the growth rate in homogeneous and inhomogeneous interacting vacuum models
• A visual tool for assessing tension-resolving models in the $H_0$-${\sigma }_8$ plane
• One-parameter dynamical dark-energy from the generalized Chaplygin gas
• Signature flips in time-varying $\Lambda (t)$ cosmological models with observational data
• Constraining Cosmology With the CMB $\times$ LIM-Nulling Convergence
• Constraints on Metastable Dark Energy Decaying into Dark Matter
• Role of Spatial Curvature in a Dark Energy Interacting Model
• Dark sector interactions in light of weak lensing data
• Some Classes of Interacting Two-Fluid Model of the Expanding Universe
• New tests of dark sector interactions from the full-shape galaxy power spectrum
• Background dynamics and observational constraints of flat and non-flat $\Lambda (t)$CDM models from $H(z)$ and DESI DR2 BAO measurements