Lyth bound revisited

doi:http://dx.doi.org/10.1103/PhysRevD.91.123532

ITP OpenIR > 理论物理所2015年知识产出

	Lyth bound revisited
	Huang, QG; Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
	2015
发表期刊	PHYSICAL REVIEW D
卷号	91 期号:12 页码:123532
文章类型	Article
摘要	Imposing that the excursion distance of the inflaton in field space during inflation be less than the Planck scale, we derive an upper bound on the tensor-to-scalar ratio at the cosmic microwave background scales, i.e., r(),(max), in the general canonical single-field slow-roll inflation model, in particular, the model with non-negligible running of the spectral index alpha(s) and/or the running of running beta(s). We find that r(),(max) similar or equal to 7 x 10(-4) for n(s) = 0.9645 without running and running of running, and r(*),(max) is significantly relaxed to the order of O(10(-2) similar to 10(-1)) in the inflation model with alpha(s) and/or beta(s) similar to + O(10(-2)) which are marginally preferred by the Planck 2015 data.
学科领域	Astronomy & Astrophysics ; Physics
资助者	Chinese Academy of Science ; Chinese Academy of Science ; NSFC [11322545, 11335012] ; NSFC [11322545, 11335012] ; Chinese Academy of Science ; Chinese Academy of Science ; NSFC [11322545, 11335012] ; NSFC [11322545, 11335012]
DOI	http://dx.doi.org/10.1103/PhysRevD.91.123532
关键词[WOS]	INFLATIONARY UNIVERSE ; FLATNESS ; SPECTRUM ; HORIZON
收录类别	SCI
语种	英语
资助者	Chinese Academy of Science ; Chinese Academy of Science ; NSFC [11322545, 11335012] ; NSFC [11322545, 11335012] ; Chinese Academy of Science ; Chinese Academy of Science ; NSFC [11322545, 11335012] ; NSFC [11322545, 11335012]
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
引用统计
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/20955
专题	理论物理所2015年知识产出
通讯作者	Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Huang, QG,Huang, QG . Lyth bound revisited[J]. PHYSICAL REVIEW D,2015,91(12):123532.
APA	Huang, QG,&Huang, QG .(2015).Lyth bound revisited.PHYSICAL REVIEW D,91(12),123532.
MLA	Huang, QG,et al."Lyth bound revisited".PHYSICAL REVIEW D 91.12(2015):123532.

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