Constraining the dark-energy equation of state with cosmological data

Yu Ping Teng, Wolung Lee, Kin Wang Ng

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

Recently, the observed equation of state for dark energy appears to favor values below -1. The tendency implies that the nature of dark energy may be quite different from that of the cosmological constant. In view of the adjustment on the equation of state keeps decreasing, the introduction of the phantom energy seems inevitable. By employing observational constraints from supernovae and from the acoustic scale in which the accuracy of the data has become extraordinary, we apply a phenomenological scenario to be acquainted with the evolution of our universe. The demonstration on the constrained unfolding of the phantom energy shows the model has high consistency with the current observation.

原文英語
文章編號A24
期刊Physical Review D
104
發行號8
DOIs
出版狀態已發佈 - 2021 10月 15

ASJC Scopus subject areas

  • 物理與天文學(雜項)

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