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Cosmological evolution of a quintom model of dark energy
Guo, ZK; Piao, YS; Zhang, XM; Zhang, YZ; Guo, ZK , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
2005
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号608期号:40972页码:177-182
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.
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
关键词Exponential Potentials Scaling Solutions Phantom Consequences Inflation Constant Quantum
学科领域Physics
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收录类别SCI
WOS记录号WOS:000227157400001
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被引频次:518[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13875
专题理论物理所1978-2010年知识产出
通讯作者Guo, ZK , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
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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.
APA Guo, ZK,Piao, YS,Zhang, XM,Zhang, YZ,&Guo, ZK , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China..(2005).Cosmological evolution of a quintom model of dark energy.PHYSICS LETTERS B,608(40972),177-182.
MLA Guo, ZK,et al."Cosmological evolution of a quintom model of dark energy".PHYSICS LETTERS B 608.40972(2005):177-182.
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