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题名: Oscillation in power spectrum of primordial gravitational wave as a signature of higher-order stringy corrections
作者: Cai, Y ;  Wang, YT ;  Piao, YS
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2016
期号: 2, 页码:59
关键词: Cosmology of Theories beyond the SM ;  Superstrings and Heterotic Strings
学科分类: Physics
DOI: http://dx.doi.org/10.1007/JHEP02(2016)059
通讯作者: Cai, Y ;  Wang, YT ;  Piao, YS (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China. ;  Piao, YS (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: In low-energy effective string theory, alpha' corrections involve the coupling of the dilaton field to Gauss-Bonnet term. We assume that the dilaton potential is fine tuned so that the dilaton field may oscillate rapidly for a while around the minimum of its potential but the inflation background is not affected. By numerical method, we find that if the dilaton starts to oscillate at the time of about similar to 60 e-folds before the end of inflation, alpha' correction may bring unusual oscillations to the inflationary gravitational wave spectrum, which might be measurably imprinted in the CMB B-mode polarization.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: GRAVITY-WAVES ;  PERTURBATIONS ;  EQUATIONS ;  UNIVERSE ;  TENSOR
收录类别: SCI
项目资助者: NSFC [11222546] ;  National Basic Research Program of China [2010CB832804] ;  Strategic Priority Research Program of Chinese Academy of Sciences [XDA04000000]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21773
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Cai, Y,Wang, YT,Piao, YS. Oscillation in power spectrum of primordial gravitational wave as a signature of higher-order stringy corrections[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016(2):59.
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