The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.
Indications of a Late-Time Interaction in the Dark Sector
Open accessAbstract
We show that a general late-time interaction between cold dark matter and vacuum energy is favored by current cosmological data sets. We characterize the strength of the coupling by a dimensionless parameter q(V) that is free to take different values in four redshift bins from the primordial epoch up to today. This interacting scenario is in agreement with measurements of cosmic microwave background temperature anisotropies from the Planck satellite, supernovae Ia from Union 2.1 and redshift space distortions from a number of surveys, as well as with combinations of these different data sets. Our analysis of the 4-bin interaction shows that a nonzero interaction is likely at late times. We then focus on the case q(V)≠0 in a single low-redshift bin, obtaining a nested one parameter extension of the standard ΛCDM model. We study the Bayesian evidence, with respect to ΛCDM, of this late-time interaction model, finding moderate evidence for an interaction starting at z=0.9, dependent upon the prior range chosen for the interaction strength parameter q(V). For this case the null interaction (q(V)=0, i.e., ΛCDM) is excluded at 99% C.L.
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Cited by
Nonminimal dark sector physics and cosmological tensions
Di Valentino, E., Melchiorri, A., Mena, O., & Vagnozzi, S. (2020) · Physical Review D · doi:10.1103/physrevd.101.063502 · Cited by 398
Self-citationA model of interacting dark fluids tested with supernovae and Baryon Acoustic Oscillations data
Bégué, D., Stahl, C., & Xue, S.-S. (2019) · Nuclear Physics B · doi:10.1016/j.nuclphysb.2019.01.001 · Cited by 37
“991; Gradwohl and Frieman 1992; Wetterich 1995; Amendola 2000, 2004; Lee et al. 2006; Pettorino and Baccigalupi 2008; Valiviita et al. 2008; He and Wang 2008; Gavela et al. 2009; Faraoni et al. 2014; Salvatelli et al. 2014; Xue 2015a; Ferreira et al. 2014; Koivisto et al. 2015) rely on the idea that dark energy and da…”
BackgroundMethod
Metadata
- Authors
- Salvatelli, V., Said, N., Bruni, M., Melchiorri, A., & Wands, D.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2014-10-30
- Volume
- 113
- Issue
- 18
- Pages
- 181301-181301
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2123455696
- Cited by
- 295
- References
- 36
- FWCI
- 14.37
- Type
- journal article
- Language
- en
- Open access
- green
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