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Oscillating modulation to B-mode polarization from varying propagating speed of primordial gravitational waves
Cai, Y; Wang, YT; Piao, YS; Cai, Y (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
2015
发表期刊PHYSICAL REVIEW D
卷号91期号:10页码:103001
文章类型Article
摘要In low-energy effective string theory and modified gravity theories, the propagating speed c(T) of primordial gravitational waves may deviate from unity. We find that the steplike variation of c(T) during slow-roll inflation may result in an oscillating modulation to the B-mode polarization spectrum, which can hardly be imitated by adjusting other cosmological parameters, and the intensity of the modulation is determined by the dynamics of c(T). Thus provided that the foreground contribution is under control, high-precision cosmic microwave background (CMB) polarization observations will be able to put tight constraint on the variation of c(T), and so the corresponding theories.
学科领域Astronomy & Astrophysics ; Physics
资助者NSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; NSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804]
DOIhttp://dx.doi.org/10.1103/PhysRevD.91.103001
关键词[WOS]FIELD-EQUATIONS ; SPECTRUM ; INFLATION ; UNIVERSE ; CMB ; PERTURBATIONS ; RADIATION ; COSMOLOGY ; TENSOR ; SCALE
收录类别SCI
语种英语
资助者NSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; NSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804]
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/311006/21004
专题理论物理所SCI论文
通讯作者Cai, Y (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
推荐引用方式
GB/T 7714
Cai, Y,Wang, YT,Piao, YS,et al. Oscillating modulation to B-mode polarization from varying propagating speed of primordial gravitational waves[J]. PHYSICAL REVIEW D,2015,91(10):103001.
APA Cai, Y,Wang, YT,Piao, YS,&Cai, Y .(2015).Oscillating modulation to B-mode polarization from varying propagating speed of primordial gravitational waves.PHYSICAL REVIEW D,91(10),103001.
MLA Cai, Y,et al."Oscillating modulation to B-mode polarization from varying propagating speed of primordial gravitational waves".PHYSICAL REVIEW D 91.10(2015):103001.
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