Using non-DESI data to confirm and strengthen the DESI 2024 spatially flat cosmological parametrization result
We use a combination of Planck cosmic microwave background (CMB) anisotropy data and
non-CMB data that include Pantheon+ type Ia supernovae (SNIa), Hubble parameter [H (z)] …
non-CMB data that include Pantheon+ type Ia supernovae (SNIa), Hubble parameter [H (z)] …
Exploring the Hubble tension with a late time Modified Gravity scenario
LA Escamilla, D Fiorucci, G Montani… - Physics of the Dark …, 2024 - Elsevier
We investigate a modified cosmological model aimed at addressing the Hubble tension,
considering revised dynamics in the late Universe. The model introduces a parameter c …
considering revised dynamics in the late Universe. The model introduces a parameter c …
Massive neutrinos and cosmic composition
M Loverde, ZJ Weiner - Journal of Cosmology and Astroparticle …, 2024 - iopscience.iop.org
Cosmological data probe massive neutrinos via their effects on the geometry of the Universe
and the growth of structure, both of which are degenerate with the late-time expansion …
and the growth of structure, both of which are degenerate with the late-time expansion …
Cosmology with varying fundamental constants from hyperlight, coupled scalars
The fundamental constants at recombination can differ from their present-day values due to
degeneracies in cosmological parameters, raising the possibility of yet-undiscovered …
degeneracies in cosmological parameters, raising the possibility of yet-undiscovered …
Is the CDM cosmological parameterization evidence for dark energy dynamics partially caused by the excess smoothing of Planck CMB anisotropy data?
We study the performance of the spatially-flat dynamical dark energy (DE) $ w_0w_a $ CDM
parameterization, with redshift-dependent DE fluid equation of state parameter $ w (z) …
parameterization, with redshift-dependent DE fluid equation of state parameter $ w (z) …
Hot new early dark energy bridging cosmic gaps: Supercooled phase transition reconciles stepped dark radiation solutions to the Hubble tension with BBN
We propose a simple model that can alleviate the H 0 tension while remaining consistent
with big bang nucleosynthesis (BBN). It is based on a dark sector described by a standard …
with big bang nucleosynthesis (BBN). It is based on a dark sector described by a standard …
Diffuse neutrino background from magnetorotational stellar core collapses
A statistically significant detection of the diffuse supernova neutrino background (DSNB) is
around the corner. To this purpose, we assess the contribution to the DSNB of …
around the corner. To this purpose, we assess the contribution to the DSNB of …
Dynamical Dark Energy from Lattice Quantum Gravity
M Dai, W Freeman, J Laiho, M Schiffer… - arxiv preprint arxiv …, 2024 - arxiv.org
We study the behavior of the vacuum in Euclidean dynamical triangulations (EDT).
Algorithmic improvements and better lattice spacing determinations allow us to test the …
Algorithmic improvements and better lattice spacing determinations allow us to test the …
Deep Learning Based Recalibration of SDSS and DESI BAO Alleviates Hubble and Clustering Tensions
Conventional calibration of Baryon Acoustic Oscillations (BAO) data relies on estimation of
the sound horizon at drag epoch $ r_d $ from early universe observations by assuming a …
the sound horizon at drag epoch $ r_d $ from early universe observations by assuming a …
Reconstructing the parameter space of nonanalytical cosmological fixed points
Dynamical system theory is a widely used technique in the analysis of cosmological models.
Within this framework, the equations describing the dynamics of a model are recast in terms …
Within this framework, the equations describing the dynamics of a model are recast in terms …