REVIEW 5 cited by
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
Constraining Cosmological Physics with DESI BAO Observations
read the original abstract
The DESI year one observations can help probe new physics on cosmological scales. In light of the latest DESI BAO measurements, we constrain five popular cosmological scenarios including inflation, modified gravity, annihilating dark matter and interacting dark energy. Using a data combination of BICEP/Keck array, cosmic microwave background and DESI, we obtain the $1\sigma$ and $2\sigma$ constraints on the tensor-to-scalar ratio $r_{0.05}= 0.0176^{+0.0070}_{-0.0130}$ and $r_{0.05}=0.018^{+0.020}_{-0.017}$ indicating a beyond $2\sigma$ evidence of primordial gravitational waves. Using the combination of cosmic microwave background and DESI, we find a $2.4\sigma$ evidence for gravitational theories beyond the general relativity, shrink the dark matter annihilation cross-section by $12\%$ relative to cosmic microwave background, obtain a $1.3\sigma$ hint of the positive interaction between dark matter and dark energy implying that energy may be transferred from dark matter to dark energy in the dark sector of the universe, and give a clue of massive sterile neutrinos via the $2\sigma$ constraint on the effective number of relativistic degrees of freedom $N_{eff}=3.16^{+0.26}_{-0.11}$ and the effective mass $m^{eff}_{\nu, sterile}<0.52$ eV. Future DESI observations could go a step further to explore the nature of inflation, dark matter, dark energy and neutrinos, and test the validity of general relativity on cosmological scales.
Forward citations
Cited by 5 Pith papers
-
Resolving the Planck-DESI tension by nonminimally coupled quintessence
Non-minimally coupled quintessence resolves the Planck-DESI Ω_m tension at >3σ while the effective equation of state stays above w=-1 and other tensions on neutrino mass and growth rate are relieved.
-
Present Day Cosmic Acceleration from SDSS and DESI BAO: A Call for Finer Tomography of the DESI Bright Galaxy Survey
DESI BAO+CMB yielding a positive present-day deceleration parameter q0≈0.10 (vs SDSS's q0≈−0.22) is explained by DESI's higher lowest effective redshift (0.295 vs 0.15), not by new physics.
-
Testing Gauss-Bonnet Gravity with DESI BAO Data
Both power-law and exponential f(G) models fit recent cosmological data better than standard ΛCDM according to information criteria, with the exponential model predicting a late-time return to deceleration.
-
The Quintom theory of dark energy after DESI DR2
This review traces the history of dynamical dark energy, presents the no-go theorem against single-field crossing of w = -1, and surveys viable Quintom constructions including multi-field models and modified gravity i...
-
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)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.