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题名: Cosmological evolution of a quintom model of dark energy
作者: 郭宗宽 ;  Piao, YS ;  Zhang, XM ;  Zhang, YZ
刊名: PHYSICS LETTERS B
出版日期: 2005
卷号: 608, 期号:40972, 页码:177-182
关键词: EXPONENTIAL POTENTIALS ;  SCALING SOLUTIONS ;  PHANTOM ;  CONSEQUENCES ;  INFLATION ;  CONSTANT ;  QUANTUM
学科分类: Physics
通讯作者: Guo, ZK , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
部门归属: CCAST, World Lab, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
英文摘要: We investigate in this Letter the cosmological evolution of a dark energy model with two scalar fields where one of the scalar has canonical kinetic energy and another scalar has negative kinetic energy term. For such a system with exponential potentials we find that during the evolution of the universe the equation of state w changes from w greater than or equal to -1 to w < -1, which is consistent with the recent observations. A phase-plane analysis shows that the "phantom"-dominated scaling solution is the stable late-time attractor of this type of models. (C) 2005 Elsevier B.V. All rights reserved.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000227157400001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13875
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:
Guo, ZK,Piao, YS,Zhang, XM,et al. Cosmological evolution of a quintom model of dark energy[J]. PHYSICS LETTERS B,2005,608(40972):177-182.
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