Oscillating modulation to B-mode polarization from varying propagating speed of primordial gravitational waves

doi:http://dx.doi.org/10.1103/PhysRevD.91.103001

ITP OpenIR > 理论物理所科研产出 > SCI论文

	Cai, Y; Wang, YT; Piao, YS; Cai, Y (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
	Oscillating modulation to B-mode polarization from varying propagating speed of primordial gravitational waves
发表期刊	PHYSICAL REVIEW D
语种	英语
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.
	2015
卷号	91 期号:10 页码:103001
学科领域	Astronomy & Astrophysics ; Physics
DOI	http://dx.doi.org/10.1103/PhysRevD.91.103001
收录类别	SCI
项目资助者	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]
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	理论物理所科研产出_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.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Oscillating modulati（324KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	请求全文