Decaying dark energy in light of the latest cosmological dataset

Abstract

Decaying Dark Energy models modify the background evolution of the most common observables, such as the Hubble function, the luminosity distance and the Cosmic Microwave Background temperature-redshift scaling relation. We use the most recent observationally-determined datasets, including Supernovae Type Ia and Gamma Ray Bursts data, along with $H(z)$ and Cosmic Microwave Background temperature versus $z$ data and the reduced Cosmic Microwave Background parameters, to improve the previous constraints on these models. We perform a Monte Carlo Markov Chain analysis to constrain the parameter space, on the basis of two distinct methods. In view of the first method, the Hubble constant and the matter density are left to vary freely. In this case, our results are compatible with previous analyses associated with decaying Dark Energy models, as well as with the most recent description of the cosmological background. In view of the second method, we set the Hubble constant and the matter density to their best fit values obtained by the {\it Planck} satellite, reducing the parameter space to two dimensions, and improving the existent constraints on the model's parameters. Our results suggest that the accelerated expansion of the Universe is well described by the cosmological constant, and we argue that forthcoming observations will play a determinant role to constrain/rule out decaying Dark Energy.

arXiv comment15 pages, 3 figure, 2 table. Accepted in the Special Issue "Cosmological Inflation, Dark Matter and Dark Energy" on Symmetry Journal

References in corpus (77)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The Cosmological Constant and Dark Energy
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• Extended Theories of Gravity
• A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
• Cosmological Constant - the Weight of the Vacuum
• Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
• The Case for a Positive Cosmological Lambda-term
• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• A 2.4% Determination of the Local Value of the Hubble Constant
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• The 3D power spectrum of galaxies from the SDSS
• The Hubble Space Telescope Cluster Supernova Survey: V. Improving the Dark Energy Constraints Above z>1 and Building an Early-Type-Hosted Supernova Sample
• Measurements of the Cosmological Parameters Omega and Lambda from the First 7 Supernovae at z >= 0.35
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Constraints on the redshift dependence of the dark energy potential
• Intrinsic spectra and energetics of BeppoSAX Gamma-Ray Bursts with known redshifts
• The Temperature of the Cosmic Microwave Background
• A 6% measurement of the Hubble parameter at $z\sim 0.45$: direct evidence of the epoch of cosmic re-acceleration
• 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
• The WiggleZ Dark Energy Survey: mapping the distance-redshift relation with baryon acoustic oscillations
• Constraining Cosmological Parameters Based on Relative Galaxy Ages
• Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
• The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
• Dark Matter and Dark Energy Interactions: Theoretical Challenges, Cosmological Implications and Observational Signatures
• New Parallaxes of Galactic Cepheids from Spatially Scanning the Hubble Space Telescope: Implications for the Hubble Constant
• The Physics of Cosmic Acceleration
• Measuring the cosmological parameters with the Ep,i-Eiso correlation of Gamma-Ray Bursts
• Comparison of the Legacy and Gold SnIa Dataset Constraints on Dark Energy Models
• Hubble Parameter and Baryon Acoustic Oscillation Measurement Constraints on the Hubble Constant, the Deviation from the Spatially-Flat $\Lambda$cdm Model, The Deceleration-Acceleration Transition Redshift, and Spatial Curvature
• New constraints on cosmological parameters and neutrino properties using the expansion rate of the Universe to z~1.75
• Observational Constraints on Dark Energy and Cosmic Curvature
• Cosmic Complementarity: H_0 and Omega_m from Combining CMB Experiments and Redshift Surveys
• $H_0$ from cosmic chronometers and Type Ia supernovae, with Gaussian Processes and the novel Weighted Polynomial Regression method
• Cosmological Parameters from Eigenmode Analysis of Sloan Digital Sky Survey Galaxy Redshifts
• Constraints on linear-negative potentials in quintessence and phantom models from recent supernova data
• Future supernovae data and quintessence models
• Extremely energetic Fermi Gamma-Ray Bursts obey spectral energy correlations
• Thermodynamics of Decaying Vacuum Cosmologies
• Efficient Cosmological Parameter Estimation from Microwave Background Anisotropies
• Observational Constraints on Cosmological Models with the Updated Long Gamma-Ray Bursts
• Cosmic Chronometers: Constraining the Equation of State of Dark Energy. II. A Spectroscopic Catalog of Red Galaxies in Galaxy Clusters
• Redshift Dependence of the CMB Temperature from S-Z Measurements
• Strong evidence for an accelerating universe
• Beyond the perfect fluid hypothesis for dark energy equation of state
• Constraining $f(R)$ gravity by the Large Scale Structure
• Measurement of the $T_{\mathrm{CMB}}$ evolution from the Sunyaev-Zel'dovich effect
• Constraints on the CMB Temperature Evolution using Multi-Band Measurements of the Sunyaev Zel'dovich Effect with the South Pole Telescope
• From Dark Energy and Dark Matter to Dark Metric
• Is there a concordance value for $H_0$?
• Tension in the Recent Type Ia Supernovae Datasets
• Two viable quintessence models of the Universe: confrontation of theoretical predictions with observational data
• Constraining the evolution of the CMB temperature with SZ measurements from Planck data
• Constraining the redshift evolution of the Cosmic Microwave Background black-body temperature with PLANCK data
• Variable Cosmological Constant model: the reconstruction equations and constraints from current observational data
• Polytropic dark matter flows illuminate dark energy and accelerated expansion
• Quantum vacuum, dark matter, dark energy and spontaneous supersymmetry breaking
• Constraining spatial variations of the fine structure constant using clusters of galaxies and Planck data
• Measuring the redshift dependence of the CMB monopole temperature with PLANCK data
• Sub-percent constraints on cosmological temperature evolution
• A conventional approach to the dark-energy concept
• Limits on decaying dark energy density models from the CMB temperature-redshift relation
• Dark Energy: The Shadowy Reflection of Dark Matter?
• Constraints from the CMB temperature and other common observational data-sets on variable dark energy density models
• Dark matter and dark energy induced by condensates
• Lyman-tomography of cosmic infrared background fluctuations with Euclid: probing emissions and baryonic acoustic oscillations at z>10
• The graviton Higgs mechanism
• Non linear massive gravity as a gravitational $\sigma$-model
• Cosmological perturbations in the $\Lambda$CDM-like limit of a polytropic dark matter model
• Vacuum degeneracy in Massive gravity=Multiplicity of fundamental scales

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• Revisiting a negative cosmological constant from low-redshift data
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