A Consistent View of Interacting Dark Energy from Multiple CMB Probes

Autor:	Zhai, Yuejia, Giarè, William, van de Bruck, Carsten, Di Valentino, Eleonora, Mena, Olga, Nunes, Rafael C.
Rok vydání:	2023
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1088/1475-7516/2023/07/032
Popis:	We analyze a cosmological model featuring an interaction between dark energy and dark matter in light of the measurements of the Cosmic Microwave Background released by three independent experiments: the most recent data by the Planck satellite and the Atacama Cosmology Telescope, and WMAP (9-year data). We show that different combinations of the datasets provide similar results, always favoring an interacting dark sector with a $95\%$~CL significance in the majority of the cases. Remarkably, such a preference remains consistent when cross-checked through independent probes, while always yielding a value of the expansion rate $H_0$ consistent with the local distance ladder measurements. We investigate the source of this preference by scrutinizing the angular power spectra of temperature and polarization anisotropies as measured by different experiments. Comment: 15 pages, 2 figures, 1 table, accepted for publication on JCAP
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2303.08201 Zobrazit plný text záznamu View this record from Arxiv