Robust evidence for dynamical dark energy in light of DESI DR2 and joint ACT, SPT, and Planck data

Abstract

Recent baryon acoustic oscillation (BAO) measurements released by DESI, when combined with cosmic microwave background (CMB) data and type Ia supernova (SN) data, suggest a significant preference for dynamical dark energy (DDE) that exhibits the phantom-like behavior in the past and has transitioned into quintessence-like behavior today. In this work, we conduct a comprehensive analysis of six representative DDE parametrization models by utilizing the latest and most precise CMB data jointly from ACT, SPT, and Planck, in conjunction with BAO data from DESI DR2 and SN data from DESY5, PantheonPlus, and Union3. Our overall analysis indicates that the preference for DDE in the Quintom-B regime remains robust, regardless of the DDE parameterization model and the data combination employed. The trend of this preference is significantly strengthened with the support of DESY5 SN data. Specifically, when using the CMB+DESI+DESY5 data, for the Barboza-Alcaniz (BA) model, we obtain $w_0=-0.785\pm 0.047$ and $w_a=-0.43_{-0.09}^{+0.10}$, which significantly deviate from the $\Lambda$CDM values and provide evidence for DDE at the $4.2\sigma$ level. By the reconstruction of the dark energy equation of state $w(z)$, normalized dark energy density $f_{\mathrm{DE}}(z)$, and the deceleration parameter $q(z)$, we also observe clear departures from $\Lambda$CDM, further reinforcing the case for DDE. Furthermore, the Bayesian evidence analysis indicates that the Chevallier-Polarski-Linder, BA and Exponential models are moderately favored relative to $\Lambda$CDM based on the CMB+DESI+DESY5 data.

13 pages, 4 figures

References in corpus (66)

• In the Realm of the Hubble tension $-$ a Review of Solutions
• The Pantheon+ Analysis: Cosmological Constraints
• Bayes in the sky: Bayesian inference and model selection in cosmology
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• CfA3: 185 Type Ia Supernova Light Curves from the CfA
• Cosmology Intertwined III: $f{\sigma }_8$ and $S_8$
• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and its Implications for Structure Growth
• Holographic dark energy models: A comparison from the latest observational data
• A parametric model for dark energy
• Constraints on Holographic Dark Energy from Latest Supernovae, Galaxy Clustering, and Cosmic Microwave Background Anisotropy Observations
• CMB power spectra and cosmological parameters from Planck PR4 with CamSpec
• The Carnegie Supernova Project I: Third Photometry Data Release of Low-Redshift Type Ia Supernovae and Other White Dwarf Explosions
• Consistency tests of $\Lambda$CDM from the early integrated Sachs-Wolfe effect: Implications for early-time new physics and the Hubble tension
• Holographic Ricci dark energy: Current observational constraints, quintom feature, and the reconstruction of scalar-field dark energy
• Robust Preference for Dynamical Dark Energy in DESI BAO and SN Measurements
• Interacting Dark Energy after DESI Baryon Acoustic Oscillation measurements
• Constraints on Interacting Dark Energy Models from the DESI Baryon Acoustic Oscillation and DES Supernovae Data
• Using non-DESI data to confirm and strengthen the DESI 2024 spatially-flat $w_0{w}_a$CDM cosmological parameterization result
• Parametrized Post-Friedmann Framework for Interacting Dark Energy
• Hints of Nonminimally Coupled Gravity in DESI 2024 Baryon Acoustic Oscillation Measurements
• Neutrino cosmology after DESI: tightest mass upper limits, preference for the normal ordering, and tension with terrestrial observations
• An overview of what current data can (and cannot yet) say about evolving dark energy
• Can dark energy be dynamical?
• New constraints on interacting dark energy from DESI DR2 BAO observations
• Cosmology in Extended Parameter Space with DESI Data Release 2 Baryon Acoustic Oscillations: A 2$\sigma$+ Detection of Nonzero Neutrino Masses with an Update on Dynamical Dark Energy and Lensing Anomaly
• Comparison of dark energy models after Planck 2015
• Assessing cosmological evidence for non-minimal coupling
• Dynamical Dark Energy Beyond Planck? Constraints from multiple CMB probes, DESI BAO and Type-Ia Supernovae
• Quantifying the $S_8$ tension and evidence for interacting dark energy from redshift-space distortion measurements
• Possible theoretical limits on holographic quintessence from weak gravity conjecture
• Constraints on interacting dark energy models from time-delay cosmography with seven lensed quasars
• The DESI DR1/DR2 evidence for dynamical dark energy is biased by low-redshift supernovae
• Probing the sign-changeable interaction between dark energy and dark matter with DESI baryon acoustic oscillations and DES supernovae data
• Neutrinos and dark energy after Planck and BICEP2: data consistency tests and cosmological parameter constraints
• Pressure Parametrization of Dark Energy: First and Second-Order Constraints with Latest Cosmological Data
• Dynamical dark energy confronted with multiple CMB missions
• Impacts of dark energy on weighing neutrinos after DESI BAO
• Interacting Dark Sectors in light of DESI DR2
• BAO miscalibration cannot rescue late-time solutions to the Hubble tension
• Dynamical Dark Energy Implies a Coupled Dark Sector: Insights from DESI DR2 via a Data-Driven Approach
• Cosmological constraints on Galileon dark energy with broken shift symmetry
• Dynamical Dark Energy in the Crosshairs: A Joint Analysis with DESI, Pantheon plus, and TDCOSMO Constraints
• Cosmological constraints on nonphantom dynamical dark energy with DESI Data Release 2 Baryon Acoustic Oscillations: A 3$\sigma$+ lensing anomaly
• Exploring non-cold dark matter in a scenario of dynamical dark energy with DESI DR2 data
• A search for sterile neutrinos in interacting dark energy models using DESI baryon acoustic oscillations and DES supernovae data
• Examining Quintessence Models with DESI Data
• Reconstructing dark energy with model independent methods after DESI DR2 BAO
• Evolving Dark Energy or Evolving Dark Matter?
• Key drivers of the preference for dynamic dark energy
• Cosmographic Footprints of Dynamical Dark Energy
• Cosmic sign-reversal: non-parametric reconstruction of interacting dark energy with DESI DR2
• Model-independent cosmological inference after the DESI DR2 data with improved inverse distance ladder
• Toward a simultaneous resolution of the $H_0$ and $S_8$ tensions: early dark energy and an interacting dark sector model
• Constraints on Dark Energy Models Using Late Universe Probes
• Measuring neutrino masses with joint JWST and DESI DR2 data
• Revisiting cosmic acceleration with DESI BAO
• Torsion cosmology in the light of DESI, supernovae and CMB observational constraints
• Constraining deviations from $\Lambda$CDM in the Hubble expansion rate
• Probing the H0 Tension with Holographic Dark Energy in Unimodular Gravity: Insights from DESI DR2
• Challenging $\Lambda$CDM with Higher-Order GUP Corrections
• Cosmological Constraints on the Phenomenological Interacting Dark Energy Model with Fermi Gamma-Ray Bursts and DESI DR2
• Exploring parametrized dark energy models in interacting scenario
• Barrow holographic dark energy interacting model in the presence of radiation and matter

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