The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
Crossing the phantom divide: theoretical implications and observational status
Open accessAbstract
If the dark energy equation of state parameter w ( z ) crosses the phantom divide line w = −1 (or equivalently if the expression d( H 2 ( z ))/d z −3Ω 0m H 0 2 (1+ z ) 2 changes sign) at recent redshifts, then there are two possible cosmological implications. Either the dark energy consists of multiple components with at least one non-canonical phantom component or general relativity needs to be extended to a more general theory on cosmological scales. The former possibility requires the existence of a phantom component which has been shown to suffer from serious theoretical problems and instabilities. Therefore, the latter possibility is the simplest realistic theoretical framework in which such a crossing can be realized. After providing a pedagogical description of various dark energy observational probes, we use a set of such probes (including the Gold SnIa (supernovae type Ia) sample, the first-year SNLS (Supernova Legacy Survey) data-set, the three-year WMAP CMB (Wilkinson Microwave Anisotropy Probe cosmic microwave background) shift parameter, the SDSS (Sloan Digital Sky Survey) baryon acoustic oscillations peak (BAO), the x-ray gas mass fraction in clusters and the linear growth rate of perturbations at z = 0.15 as obtained from the 2dF (Two-Degree Field) Galaxy Redshift Survey) to investigate the priors required for cosmological observations to favour crossing of the phantom divide. We find that a low Ω 0m prior (0.2<Ω 0m <0.25) leads, for most observational probes (except of the SNLS data), to an increased probability (mild trend) for phantom divide crossing. An interesting degeneracy of the integrated Sachs–Wolfe effect in the CMB perturbation spectrum is also pointed out.
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Modified gravity theories on a nutshell: Inflation, bounce and late-time evolution
Nojiri, S., Odintsov, S. D., & Oikonomou, V. K. (2017) · Physics Reports · doi:10.1016/j.physrep.2017.06.001 · Cited by 2,734
Two new diagnostics of dark energy
Sahni, V., Shafieloo, A., & Starobinsky, A. A. (2008) · Physical Review D · doi:10.1103/physrevd.78.103502 · Cited by 709
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Amendola, L., Kunz, M., & Sapone, D. (2008) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2008/04/013 · Cited by 400
Nesseris, S., Pantazis, G., & Perivolaropoulos, L. (2017) · Physical Review D · doi:10.1103/physrevd.96.023542 · Cited by 229
Self-citationConstraints on a new post-general relativity cosmological parameter
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Metadata
- Authors
- Nesseris, S., & Perivolaropoulos, L.
- Venue
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Published
- 2007-01-19
- Volume
- 2007
- Issue
- 01
- Pages
- 018-018
- ISSN
- 1475-7508 (ISSN-L)
- 1475-7516
- OpenAlex
- W2030178578
- Cited by
- 355
- References
- 10
- FWCI
- 23.96
- Type
- journal article
- Language
- en
- Open access
- green
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