Adding DESI DR1 RSD, DES Y3 3x2pt, and ISW cross-correlations to CMB+BAO+SNe improves FoM for EFTofDE parameters {cB, cM} by 2.69x and for {mu(z), Sigma(z)} by 3.37x, with 2.9 sigma deviation from LambdaCDM similar to w0waCDM.
A general theory of linear cosmological perturbations: bimetric theories
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We implement the method developed in [1] to construct the most general parametrised action for linear cosmological perturbations of bimetric theories of gravity. Specifically, we consider perturbations around a homogeneous and isotropic background, and identify the complete form of the action invariant under diffeomorphism transformations, as well as the number of free parameters characterising this cosmological class of theories. We discuss, in detail, the case without derivative interactions, and compare our results with those found in massive bigravity.
fields
astro-ph.CO 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
Constraining dark energy with complementary probes of large-scale structure
Adding DESI DR1 RSD, DES Y3 3x2pt, and ISW cross-correlations to CMB+BAO+SNe improves FoM for EFTofDE parameters {cB, cM} by 2.69x and for {mu(z), Sigma(z)} by 3.37x, with 2.9 sigma deviation from LambdaCDM similar to w0waCDM.