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题名: Inflation coupled to a Gauss-Bonnet term
作者: Jiang, PX ;  Hu, JW ;  Guo, ZK
刊名: PHYSICAL REVIEW D
出版日期: 2013
卷号: 88, 期号:12, 页码:123508
关键词: DARK ENERGY ;  COSMOLOGY ;  GRAVITY ;  MODELS ;  UNIVERSE ;  DILATON ;  BULK
学科分类: Physics
通讯作者: Jiang, PX (reprint author), Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China.
部门归属: [Jiang, Peng-Xu] Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China; [Jiang, Peng-Xu; Hu, Jian-Wei; Guo, Zong-Kuan] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: The newly released Planck cosmic microwave background data place tight constraints on slow-roll inflationary models. Some commonly discussed inflationary potentials are disfavored due mainly to the large tensor-to-scalar ratio. In this paper we show that these potentials may be in good agreement with the Planck data when the inflaton has a nonminimal coupling to the Gauss-Bonnet term. Moreover, such a coupling violates the consistency relation between the tensor spectral index and tensor-to-scalar ratio. If the tensor spectral index is allowed to vary freely, the Planck constraints on the tensor-to-scalar ratio are slightly improved.
资助者: Chinese Academy of Science, NSFC [11175225]; National Basic Research Program of China [2010CB832805]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000328602900007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15211
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Jiang, PX,Hu, JW,Guo, ZK. Inflation coupled to a Gauss-Bonnet term[J]. PHYSICAL REVIEW D,2013,88(12):123508.
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