Gravitational waves: A probe to the physics in the early universe

doi:http://dx.doi.org/10.1142/S0217751X15450050

ITP OpenIR > 理论物理所科研产出 > SCI论文

	Huang, QG; Huang, QG (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
	Gravitational waves: A probe to the physics in the early universe
发表期刊	INTERNATIONAL JOURNAL OF MODERN PHYSICS A
语种	英语
关键词	Primordial Gravitational Waves Inflation Tensor-to-scalar Ratio Spectral Index
摘要	Gravitational waves can escape from the big bang and can be taken as a probe to the physics, in particular the inflation, in the early universe. Planck scale is a fundamental scale for quantum theory of gravity. Requiring the excursion distance of inflaton in the field space during inflation yields an upper bound on the tensor-to-scalar ratio. For example, r < 7 x 10(-4) for n(s) = 0.9645. In the typical inflationary scenario, we predict 1 -2/N < n(s) < 1 and -2/N-2 < alpha(s) < 0 which are consistent with Planck data released in 2015 quite well. Subtracting the contribution of thermal dust measured by Planck, BICEP2 data implies r less than or similar to 0.08 which is the tightest bound on the tensor-to-scalar ratio from current experiments.
	2015
卷号	30 期号:28-29 页码:1545005
学科领域	Physics
DOI	http://dx.doi.org/10.1142/S0217751X15450050
收录类别	SCI
项目资助者	NSFC [11322545, 11335012, 11575271] ; NSFC [11322545, 11335012, 11575271] ; NSFC [11322545, 11335012, 11575271] ; NSFC [11322545, 11335012, 11575271]
引用统计
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/20821
专题	理论物理所科研产出_SCI论文
通讯作者	Huang, QG (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Huang, QG,Huang, QG . Gravitational waves: A probe to the physics in the early universe[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2015,30(28-29):1545005.
APA	Huang, QG,&Huang, QG .(2015).Gravitational waves: A probe to the physics in the early universe.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,30(28-29),1545005.
MLA	Huang, QG,et al."Gravitational waves: A probe to the physics in the early universe".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 30.28-29(2015):1545005.

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