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Gong, YG; Zhang, YZ; Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China.
Probing the curvature and dark energy
Source PublicationPHYSICAL REVIEW D
KeywordHubble-space-telescope Cosmological Constant Cosmic Acceleration Supernova Constraints Universe Model Quintessence Redshift Equation
AbstractTwo new one-parameter tracking behavior dark energy representations omega=omega(0)/(1+z) and omega=omega(0)e(z/(1+z))/(1+z) are used to probe the geometry of the Universe and the property of dark energy. The combined type Ia supernova, Sloan Digital Sky Survey, and Wilkinson Microwave Anisotropy Probe data indicate that the Universe is almost spatially flat and that dark energy contributes about 72% of the matter content of the present universe. The observational data also tell us that omega(0)similar to-1. It is argued that the current observational data can hardly distinguish different dark energy models to the zeroth order. The transition redshift when the expansion of the Universe changed from deceleration phase to acceleration phase is around z(T)similar to 0.6 by using our one-parameter dark energy models.
2005
ISSN1550-7998
Volume72Issue:4Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:55[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13774
CollectionSCI期刊论文
Corresponding AuthorGong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China.
Recommended Citation
GB/T 7714
Gong, YG,Zhang, YZ,Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China.. Probing the curvature and dark energy[J]. PHYSICAL REVIEW D,2005,72(4):-.
APA Gong, YG,Zhang, YZ,&Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China..(2005).Probing the curvature and dark energy.PHYSICAL REVIEW D,72(4),-.
MLA Gong, YG,et al."Probing the curvature and dark energy".PHYSICAL REVIEW D 72.4(2005):-.
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