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题名: A note on crossing the phantom divide in hybrid dark energy model
作者: Wei, H ;  蔡荣根
刊名: PHYSICS LETTERS B
出版日期: 2006
卷号: 634, 期号:1, 页码:9-13
关键词: HIGH-REDSHIFT SUPERNOVAE ;  HUBBLE-SPACE-TELESCOPE ;  EQUATION-OF-STATE ;  COSMOLOGICAL CONSTANT ;  CONSTRAINTS ;  TRANSITION ;  COMPONENT ;  EVOLUTION ;  UNIVERSE ;  LAMBDA
学科分类: Physics
通讯作者: Wei, H , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
英文摘要: Recently 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000235627500003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/6024
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Wei, H,Cai, RG. A note on crossing the phantom divide in hybrid dark energy model[J]. PHYSICS LETTERS B,2006,634(1):9-13.
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