Reconciling CMB and structure growth measurements with dark energy interactions
By A. Pourtsidou, Thomas Tram. 2016
148 citations recorded by the source corpus.
We study a coupled quintessence model with pure momentum exchange and present the effects of such an interaction on the cosmic microwave background (CMB) and matter power spectrum. For a wide range of negative values of the coupling parameter β structure growth is suppressed and the model can reconcile the tension between cosmic microwave background observations and structure growth inferred from cluster counts. We find that this model is as good as ΛCDM for CMB and baryon acoustic oscillation data, while the addition of cluster data makes the model strongly preferred, improving the best-fit χ2 value by more than 16.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/08e53070159049ba8e3308e7982b1b8c933d613b
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Astronomy and Astrophysics
In Nuclear and High Energy Physics
- S. Vagnozzi
- E. di Valentino
- O. Mena
- Rafael C. Nunes
- V. Poulin
- Supriya Pan
- A. Melchiorri
- Weiqiang Yang
Citations in the corpus
- A fresh look at linear cosmological constraints on a decaying Dark Matter component (2016, background): “Numerous alternative explanations are available in the literature: we can mention a possible interaction between dark matter and dark radiation [37] or in the dark energy sector [38], or adding sterile neutrinos with pseudoscalar self-interactions [39].”
- Interacting dark energy in the early 2020s: A promising solution to the H0 and cosmic shear tensions (2019, background): “Despite these uncertainties, a number of exotic scenarios have been advocated in the past to alleviate the S8 tension, see for instance [14, 16, 24, 30, 33, 36, 41, 51, 59, 112, 121–127].”
- Interacting scenarios with dynamical dark energy: Observational constraints and alleviation of the H0 tension (2019, background): “[96] A.”
- Tale of stable interacting dark energy, observational signatures, and the H0 tension (2018, methodology): “In addition, an interaction between DM and DE has been shown to be effective in alleviating the tension between the value of σ8 inferred from the CMB and the weak lensing measurements [90, 91], such as those from the Canada France Hawaii Lensing Survey (CFHTLenS) [92, 93], the Kilo Degree Survey of ”