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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
Source PublicationINTERNATIONAL JOURNAL OF MODERN PHYSICS A
Language英语
KeywordPrimordial Gravitational Waves Inflation Tensor-to-scalar Ratio Spectral Index
AbstractGravitational 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
Volume30Issue:28-29Pages:1545005
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1142/S0217751X15450050
Indexed BySCI
Funding OrganizationNSFC [11322545, 11335012, 11575271] ; NSFC [11322545, 11335012, 11575271] ; NSFC [11322545, 11335012, 11575271] ; NSFC [11322545, 11335012, 11575271]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/20821
Collection理论物理所科研产出_SCI论文
Corresponding AuthorHuang, QG (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
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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