The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.
Cosmological consequences of a time-dependentΛterm
Abstract
The phenomenological approach to investigate the decay of the effective cosmological constant, as recently proposed by Chen and Wu, is generalized to include a term proportional to ${H}^{2}$ on the time dependence of $\ensuremath{\Lambda}$, where $H$ is the Hubble parameter. This new term can modify some features of the standard Friedmann-Robertson-Walker model and its free parameter may be adjusted in accordance with nucleosynthesis constraints. The model also allows a deceleration parameter ${q}_{0}$ assuming negative values so that the density parameter ${\ensuremath{\Omega}}_{0}$ is smaller than ⅔ and the age of the Universe is always bigger than ${H}_{0}^{\ensuremath{-}1}$. In these cases, the usual matter creation rate appearing in models with a decaying vacuum energy is smaller than the one present in the steady-state model.
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Citations
Cites
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Cited by
THE CASE FOR A POSITIVE COSMOLOGICAL Λ-TERM
SAHNI, V., & STAROBINSKY, A. (2000) · International Journal of Modern Physics D · doi:10.1142/s0218271800000542 · Cited by 2,767
Indications of a Late-Time Interaction in the Dark Sector
Salvatelli, V., Said, N., Bruni, M., Melchiorri, A., & Wands, D. (2014) · Physical Review Letters · doi:10.1103/physrevlett.113.181301 · Cited by 295
Metadata
- Authors
- Carvalho, J. C., Lima, J. A. S., & Waga, I.
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 1992-09-15
- Volume
- 46
- Issue
- 6
- Pages
- 2404-2407
- ISSN
- 0556-2821 (ISSN-L)
- OpenAlex
- W2039536451
- Cited by
- 393
- References
- 15
- FWCI
- 5.90
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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