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]
DOIhttp://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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