REVIEW 4 cited by
Cosmic Clues: DESI, Dark Energy, and the Cosmological Constant Problem
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
abstract
Several attempts to solve the cosmological constant problem, which concerns the value of the cosmological constant being extremely smaller than the Standard Model mass scales, have introduced a scalar field with a very flat potential that can be approximated as linear around any given position. The scalar field scans the cosmological constant in such a way that the current small value is explained. Recently, Dark Energy Spectroscopic Instrument (DESI) reported the results of the first year. Combining the data with CMB, Pantheon, Union3, and/or DES-SN5YR, there is a preference or anomaly, indicating that the dark energy in the current Universe slightly deviates from that in the $\Lambda$CDM model and varies over time. In this paper, I show that the simple linear potential of a scalar field that may explain the small cosmological constant can explain the DESI anomaly. In particular, the model proposed by the present author in 2108.04246, which relaxes the cosmological constant by the condition that inflation ends, predicts a time-dependence of the dark energy close to the one favored by the data.
Forward citations
Cited by 4 Pith papers
-
Why 4D? Spontaneous Dimensional Selection from Gauge Criticality
Gauge criticality of Yang–Mills, via racetrack confinement and 3D dynamical SUSY breaking, can stabilize radii so that a macroscopic 4D spacetime emerges without being put in by hand.
-
UV-complete and stable Quintom Dark Energy models in the light of DESI DR2
Quintom dark energy is UV-completed in 5D NPGHU, producing a modified Quintom-B model whose massive gauge ghost fits DESI with negligible fine-tuning and remains stable for Λ ~ O(10)H0.
-
The Lifespan of our Universe
If the axion dark energy model with a negative cosmological constant is the true explanation of DES/DESI data, the universe will end in a big crunch at a total age of about 33 billion years.
-
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.
Discussion (0). Sign in to comment.