PhysRevD.75.023502.pdf (1.33 MB)
Quintessence reconstructed: new constraints and tracker viability
journal contribution
posted on 2023-06-07, 13:48 authored by M. Sahl'en, Andrew Liddle, David ParkinsonWe update and extend our previous work reconstructing the potential of a quintessence field from current observational data. We extend the cosmological data set to include new supernova data, plus information from the cosmic microwave background and from baryon acoustic oscillations. We extend the modeling by considering Padé approximant expansions as well as Taylor series, and by using observations to assess the viability of the tracker hypothesis. We find that parameter constraints have improved by a factor of 2, with a strengthening of the preference of the cosmological constant over evolving quintessence models. Present data show some signs, though inconclusive, of favoring tracker models over nontracker models under our assumptions.
History
Publication status
- Published
File Version
- Published version
Journal
Physical Review DISSN
0559-2821External DOI
Issue
2Volume
75Pages
23502.0Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2007-02-28First Open Access (FOA) Date
2019-08-06First Compliant Deposit (FCD) Date
2019-08-06Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC