REVIEW 19 cited by
Investigating Late-Time Dark Energy and Massive Neutrinos in Light of DESI Y1 BAO
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
Baryonic Acoustic Oscillation (BAO) data from the Dark Energy Spectroscopic Instrument (DESI), in combination with Cosmic Microwave Background (CMB) data and Type Ia Supernovae (SN) luminosity distances, suggests a dynamical evolution of the dark energy equation of state with a phantom phase ($w < -1$) in the past when the so-called $w_0w_a$ parametrization $w(a) = w_0 + w_a(1-a)$ is assumed. In this work, we investigate more general dark energy models that also allow a phantom equation of state. We consider three cases: an equation of state with a transition feature, a model-agnostic equation of state with constant values in chosen redshift bins, and a k-essence model. Since the dark energy equation of state is correlated with neutrino masses, we reassess constraints on the neutrino mass sum focusing on the model-agnostic equation of state. We find that the combination of DESI BAO with Planck 2018 CMB data and SN data from Pantheon, Pantheon+, or Union3 is consistent with an oscillatory dark energy equation of state, while a monotonic behavior is preferred by the DESY5 SN data. Performing model comparison techniques, we find that the $w_0w_a$ parametrization remains the simplest dark energy model that can provide a better fit to DESI BAO, CMB, and all SN datasets than $\Lambda$CDM. Constraints on the neutrino mass sum assuming dynamical dark energy are relaxed compared to $\Lambda$CDM and we show that these constraints are tighter in the model-agnostic case relative to $w_0w_a$ model by $70\%-90\%$.
Forward citations
Cited by 19 Pith papers
-
General Relativistic Entropic Acceleration at the perturbation level: a CLASS implementation and first Boltzmann-code constraints
First full Boltzmann-code implementation of entropic dark energy, with MCMC constraints from CMB+BAO+SN, yields α≈1 and a fit statistically indistinguishable from ΛCDM.
-
Measuring Cosmic Neutrino Masses Independently of Dark Energy
Two dark-energy-robust cosmological routes bound ∑mν to <0.152 eV (marginalized) and <0.41 eV (late-Universe-free), with the latter independent of tested w(a) models by construction.
-
Dark Energy Crosses the Line: Quantifying and Testing the Evidence for Phantom Crossing
Using CPL fits to six data combinations, the paper finds 3.1-5.2 sigma preference for a phantom-to-quintessence crossing of the dark energy equation of state, and shows that modified non-crossing models generally fit ...
-
Turning a negative neutrino mass into a positive optical depth
The DESI-CMB tension that looks like negative neutrino mass or evolving dark energy is actually a tension in the optical depth tau; freeing tau resolves it within standard cosmology.
-
Tuning the cosmic instrument: robust cosmology through combined probes
Low-redshift large-scale structure data pull the dark-energy equation-of-state posterior toward a cosmological constant and yield S8=0.777±0.017.
-
Prospects for measuring neutrino mass with 21-cm forest
Using an analytic halo model, the authors forecast that 21-cm forest observations with SKA-LOW could constrain the total neutrino mass to about 0.1 eV, potentially distinguishing neutrino mass hierarchies.
-
Uniting the Observed Dynamical Dark Energy Preference with the Discrepancies in $\Omega_m$ and $H_0$ Across Cosmological Probes
Mock data generated in evolving-dark-energy cosmologies, when fit under ΛCDM, reproduce the observed probe-to-probe differences in Ωm and the ~1.2 km/s/Mpc BAO H0 bias.
-
New parameter region in sterile neutrino searches: a scenario to alleviate cosmological neutrino mass bound and its testability at oscillation experiments
IceCube can test massless sterile neutrinos lighter than active neutrinos in the inverted-ordering regime, with sensitivity to sin^2 2theta24 ~ 10^-2 at |Delta m^2_41| ~ 0.2 eV^2, a region opened by the Farzan-Hannest...
-
Upper limits on dark energy-dark matter interaction from DESI DR2 in a field-theoretic analysis
A field-theoretic calculation finds that dark energy and dark matter interact only very weakly, and DESI data rule out the strong-interaction regime that would change quintessence behavior.
-
Robust Preference for Dark Sector Interactions
Interacting dark matter–dark energy models fit DESI BAO and CMB data as well as evolving-dark-energy (CPL) models, with a coupling preference that persists under DES-Dovekie supernova recalibration.
-
Can the universe experience an AdS landscape since matter-radiation equality?
A universe with an AdS (negative cosmological constant) phase at recombination and another at low redshift is compatible with Planck, DESI, Pantheon Plus and SH0ES data, though not preferred by them.
-
Attention-based Neural Network Emulators for Multi-Probe Data Vectors Part III: Modeling The Next Generation Surveys
A transformer-based emulator reproduces CAMB CMB TT, TE, and EE power spectra within cosmic variance errors across a wide Lambda-CDM parameter space, with outlier fractions below 10% for future survey configurations.
-
Updated Constraints on Omnipotent Dark Energy: A Comprehensive Analysis with CMB and BAO Data
Updated constraints on the DMS20 dark energy model from CMB, BAO, and Pantheon+ data keep it consistent with Lambda CDM while generically producing two phantom-divide crossings; the H0 tension is reduced only with enl...
-
Robustness of dark energy phenomenology across different parameterizations
The viability of minimally and non-minimally coupled quintessence models is robust across CPL, JBP, BA, and EXP parameterizations, with all four reproducing the models' predicted observables accurately.
-
Is excess smoothing of Planck CMB ansiotropy data partially responsible for evidence for dark energy dynamics in other $w(z)$CDM parametrizations?
In three new w(z)CDM parametrizations, Planck CMB plus non-CMB data favor evolving dark energy over a cosmological constant at roughly 2 sigma when the Planck lensing anomaly parameter is fixed, and at roughly 1 sigma...
-
Is cosmological data suggesting a nonminimal coupling between matter and gravity?
Fitting a one-parameter modified gravity model to Pantheon+, DES, and BAO data gives mixed evidence: the n=6 version is preferred by information criteria in most combinations, but n=4 and n=10 are often disfavored, an...
-
Imprint of swampland-inspired coupled early dark energy
A swampland-inspired DM-EDE coupling is tested against DESI DR2 BAO data, showing the EDE potential construction affects late-time dark energy constraints.
-
An overview of what current data can (and cannot yet) say about evolving dark energy
The apparent preference for evolving dark energy depends strongly on which supernova catalog and which BAO survey are used, and is not robust across all independent data combinations.
-
A short review on Quintom dark energy theory
Quintom dark energy models permit the equation of state to cross w=-1, supporting bouncing cosmologies and CMB-based tests of dark energy nature.
Discussion (0). Continue with ORCID to comment.