@Article{NunesVagKumDiVMen:2022:NeTeDa,
author = "Nunes, Rafael da Costa and Vagnozzi, Sunny and Kumar, Suresh and
Di Valentino, Eleonora and Mena, Olga",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {University
of Cambridge} and {} and {University of Sheffield} and {University
of Valencia}",
title = "New tests of dark sector interactions from the full-shape galaxy
power spectrum",
journal = "Physical Review D",
year = "2022",
volume = "105",
number = "12",
pages = "e123506",
month = "June",
abstract = "We explore the role of redshift-space galaxy clustering data in
constraining nongravitational interactions between dark energy
(DE) and dark matter (DM), for which state-of-the-art limits have
so far been obtained from late-time background measurements. We
use the joint likelihood for prereconstruction full-shape (FS)
galaxy power spectrum and postreconstruction Baryon Acoustic
Oscillation (BAO) measurements from the BOSS DR12 sample,
alongside Cosmic Microwave Background (CMB) data from Planck: from
this dataset combination we infer H0 1/4 68.02+0.49 and the 2??
lower limit ?? > ???0.12, among the strongest limits ever reported
on the DM-DE coupling strength ?? for the particular model
considered. Contrary to what has been observed for the ??CDM model
and simple extensions thereof, we find that the CMB + FS
combination returns tighter constraints compared to the CMB + BAO
one, suggesting that there is valuable additional information
contained in the broadband of the power spectrum. We test this
finding by running additional CMB-free analyses and removing sound
horizon information, and discuss the important role of the
equality scale in setting constraints on DM-DE interactions. Our
results reinforce the critical role played by redshift-space
galaxy clustering measurements in the epoch of precision
cosmology, particularly in relation to tests of nonminimal dark
sector extensions of the ??CDM model.",
doi = "10.1103/PhysRevD.105.123506",
url = "http://dx.doi.org/10.1103/PhysRevD.105.123506",
issn = "1550-2368 and 1550-7998",
language = "en",
targetfile = "PhysRevD.105.123506.pdf",
urlaccessdate = "25 jun. 2024"
}