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Cosmological scaling solutions and multiple exponential potentials
Guo, ZK; Piao, YS; Zhang, YZ; Guo, ZK , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
2003
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号568期号:40910页码:1-7
摘要We present a phase-space analysis of cosmology containing multiple scalar fields with positive and negative exponential potentials. We show that there exist power-law multi-kinetic-potential scaling solutions for sufficiently flat positive potentials or steep negative potentials. The former is the unique late-time attractor and the well-known assisted inflationary solution, but the later is never unstable in an expanding universe. Moreover, for steep negative potentials there exist a kinetic-dominated regime in which each solution is a late-time attractor. We briefly discuss the physical consequences of these results. (C) 2003 Published by Elsevier B.V.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China
关键词Inflationary Universe Scalar Fields Models Spacetimes Flatness Scenario Horizon
学科领域Physics
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收录类别SCI
WOS记录号WOS:000184890800001
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被引频次:44[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/311006/13237
专题理论物理所1978-2010年知识产出
通讯作者Guo, ZK , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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Guo, ZK,Piao, YS,Zhang, YZ,et al. Cosmological scaling solutions and multiple exponential potentials[J]. PHYSICS LETTERS B,2003,568(40910):1-7.
APA Guo, ZK,Piao, YS,Zhang, YZ,&Guo, ZK , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2003).Cosmological scaling solutions and multiple exponential potentials.PHYSICS LETTERS B,568(40910),1-7.
MLA Guo, ZK,et al."Cosmological scaling solutions and multiple exponential potentials".PHYSICS LETTERS B 568.40910(2003):1-7.
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