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Wei, H; Cai, RG; Wei, H , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
A note on crossing the phantom divide in hybrid dark energy model
Source PublicationPHYSICS LETTERS B
KeywordHigh-redshift Supernovae Hubble-space-telescope Equation-of-state Cosmological Constant Constraints Transition Component Evolution Universe Lambda
AbstractRecently a lot of attention has been given to building dark energy models in which the equation-of-state parameter w can cross the phantom divide w = -1. However, to our knowledge, these models with crossing the phantom divide only provide the possibility that w can cross -1. They do not answer another question: why crossing phantom divide occurs recently? Since in many existing models whose equation-of-state parameter can cross the phantom divide, w undulates around -1 randomly, why are we living in an epoch w < -1? This can be regarded as the second cosmological coincidence problem. In this Letter, we propose a possible approach to alleviate this problem within a hybrid dark energy model. (c) 2006 Published by Elsevier B.V.
2006
ISSN0370-2693
Volume634Issue:1Pages:9-13
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:68[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/6024
Collection理论物理所科研产出_SCI论文
Corresponding AuthorWei, H , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wei, H,Cai, RG,Wei, H , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. A note on crossing the phantom divide in hybrid dark energy model[J]. PHYSICS LETTERS B,2006,634(1):9-13.
APA Wei, H,Cai, RG,&Wei, H , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2006).A note on crossing the phantom divide in hybrid dark energy model.PHYSICS LETTERS B,634(1),9-13.
MLA Wei, H,et al."A note on crossing the phantom divide in hybrid dark energy model".PHYSICS LETTERS B 634.1(2006):9-13.
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