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, and the abstract overstates the result.
$\Lambda$CDM: Much more than we expected, but now less than what we want
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
The $\rm\Lambda$CDM cosmological model is remarkable: with just 6 parameters it describes the evolution of the Universe from a very early time when all structures were quantum fluctuations on subatomic scales to the present, and it is consistent with a wealth of high-precision data, both laboratory measurements and astronomical observations. However, the foundation of $\rm\Lambda$CDM involves physics beyond the standard model of particle physics: particle dark matter, dark energy and cosmic inflation. Until this `new physics' is clarified, $\rm\Lambda$CDM is at best incomplete and at worst a phenomenological construct that accommodates the data. I discuss the path forward, which involves both discovery and disruption, some grand challenges and finally the limits of scientific cosmology.
fields
astro-ph.CO 1years
2024 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
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, and the abstract overstates the result.