Testing an oscillatory behavior of dark energy

Abstract

The main aim of this work is to use a model-independent approach, along with late-time observational probes, to reconstruct the dark energy (DE) equation of state $w_{\mathrm{DE}}(z)$. Our analysis showed that, for a late time universe, $w_{\mathrm{DE}}$ deviates from being a constant but in contrast exhibits an oscillatory behavior, hence both quintessence ($w_{\mathrm{DE}}>-1$) and phantom ($w_{\mathrm{DE}}<-1$) regimes are equally allowed. In order to portray this oscillatory behavior, we explored various parametrizations for the equation of state and identified the closest approximation based on the goodness of fit with the data and the Bayesian evidence analysis. Our findings indicated that while all considered oscillating DE parametrizations provided a better fit to the data, compared to the cosmological constant, they are penalized in the Bayesian evidence analysis due to the additional free parameters. Overall, the present article demonstrates that in the low redshift regime, the equation of state of the DE prefers to be dynamical and oscillating. We anticipate that future cosmological probes will take a stand in this direction.

12 pages, 5 figures, 4 tables

References in corpus (87)

• Dynamics of dark energy
• f(R) Theories Of Gravity
• Modified Gravity and Cosmology
• f(R) theories
• Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
• Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
• Exploring the Expansion History of the Universe
• Accelerating Universes with Scaling Dark Matter
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• dynesty: A Dynamic Nested Sampling Package for Estimating Bayesian Posteriors and Evidences
• In the Realm of the Hubble tension $-$ a Review of Solutions
• f(T) teleparallel gravity and cosmology
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• Constraints on the redshift dependence of the dark energy potential
• Tensions between the Early and the Late Universe
• 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
• Cosmological parameter analysis including SDSS Ly-alpha forest and galaxy bias: constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy
• Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z$\sim$2
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• Cosmological implications of baryon acoustic oscillation (BAO) measurements
• The Hubble Hunter's Guide
• Cosmology Intertwined II: The Hubble Constant Tension
• Teleparallel Gravity: From Theory to Cosmology
• Constraints on the equation of state of dark energy and the Hubble constant from stellar ages and the CMB
• Dynamical dark energy in light of the latest observations
• WMAP constraints on low redshift evolution of dark energy
• The case for dynamical dark energy revisited
• Comparison of the Legacy and Gold SnIa Dataset Constraints on Dark Energy Models
• Oscillating Quintom and the Recurrent Universe
• Future Supernovae observations as a probe of dark energy
• Precision measures of the primordial abundance of deuterium
• 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
• Constraining the equation of state of the Universe from Distant Type Ia Supernovae and Cosmic Microwave Background Anisotropies
• Phenomenological parameterization of quintessence
• A parametric model for dark energy
• Perturbations of the Quintom Models of Dark Energy and the Effects on Observations
• Phase-Space analysis of Teleparallel Dark Energy
• Why reducing the cosmic sound horizon alone can not fully resolve the Hubble tension
• A Simple Phenomenological Emergent Dark Energy Model can Resolve the Hubble Tension
• Dynamical dark energy: Current constraints and forecasts
• Observational constraints on one-parameter dynamical dark-energy parametrizations and the $H_0$ tension
• The oscillating dark energy: future singularity and coincidence problem
• Quintom cosmologies with arbitrary potentials
• Probing the dynamics of dark energy with novel parametrizations
• Hyperinflation
• Dynamical analysis of generalized Galileon cosmology
• Can luminosity distance measurements probe the equation of state of dark energy
• Probing the curvature and dark energy
• Dynamical dark energy after Planck CMB final release and $H_0$ tension
• Evidence for Emergent Dark Energy
• A generalized equation of state for dark energy
• Can dark energy be dynamical?
• The state of the dark energy equation of state circa 2023
• Observational Constraints on Oscillating Dark-Energy Parametrizations
• Cosmological parameter inference with Bayesian statistics
• Generalized Emergent Dark Energy Model and the Hubble Constant Tension
• SN and BAO constraints on (new) polynomial dark energy parametrizations: current results and forecasts
• A New Class of Parametrization for Dark Energy without Divergence
• Generalized Emergent Dark Energy: observational Hubble data constraints and stability analysis
• Structure formation in cosmologies with oscillating dark energy
• On Oscillating Dark Energy
• Latest astronomical constraints on some nonlinear parametric dark energy models
• Observational constraints on dark energy with a fast varying equation of state
• Model selection applied to reconstructions of the Dark Energy
• Imprints of an extended Chevallier-Polarski-Linder parametrization on the large scale of our universe
• Fourier-series expansion of the dark-energy equation of state
• Probing the dynamics of dark energy with divergence-free parametrizations: A global fit study
• Growth index and statefinder diagnostic of Oscillating Dark Energy
• Dark energy reconstruction based on the PADE approximation; an expansion around the $\Lambda$CDM
• Constraining the dynamical dark energy parameters: Planck-2013 vs WMAP9
• Non-parametric dark energy reconstruction using the tomographic Alcock-Paczynski test
• Dynamics of Chiral Cosmology
• Constraints on oscillating dark energy models
• Oscillating dark energy: a possible solution to the problem of eternal acceleration
• Testing cosmic acceleration for $w(z)$ parameterizations using $f_{gas}$ measurements in galaxy clusters
• Observational constraints on the oscillating dark energy cosmologies
• Cosmological bounds on oscillating dark energy models
• Oscillating Universe from inhomogeneous EoS and coupled dark energy
• No evidence for dynamical dark energy in two models
• Oscillating dark energy in light of the latest observations and its impact on the Hubble tension
• From model dynamics to oscillating dark energy parameterisation
• Structure Formation in Various Dynamical Dark Energy Scenarios
• Complex Scalar fields in Scalar-Tensor and Scalar-Torsion theories
• Constraining neutrino mass in dynamical dark energy cosmologies with the logarithm parametrization and the oscillating parametrization

Cited by in corpus (14)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Interpreting DESI 2024 BAO: late-time dynamical dark energy or a local effect?
• Observational Constraints on Dark Energy Models with $\Lambda$ as an Equilibrium Point
• Optimal parameterizations for observational constraints on thawing dark energy
• Dark Energy within the Generalized Uncertainty Principle in Light of DESI DR2
• Unexplored regions in teleparallel $f(T)$ gravity: Sign-changing dark energy density
• Shape of Dark Energy: Constraining Its Evolution with a General Parametrization
• Beyond Two Parameters: Revisiting Dark Energy with the Latest Cosmic Probes
• Challenging $\Lambda$CDM with Higher-Order GUP Corrections
• How Much NEC Breaking Can the Universe Endure?
• Dynamical Oscillations in Dark Energy: Joint Constraints on the $w_{sin}$CDM Model from DESI, OHD, and Supernova Samples
• Is Dark Energy Changing? Probing the Universe's Expansion with present and future astronomical probes
• Observational constraints on a modified-gravity model with an exponential function of the curvature using the expansion history, the RSD, and the Pantheon+SH0ES data
• How Holographic is the Dark Energy? A Spline Nodal reconstruction approach