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题名: Gravitational waves: A test for modified gravity
作者: Xu, LX
刊名: PHYSICAL REVIEW D
出版日期: 2015
卷号: 91, 期号:10, 页码:103520
学科分类: Astronomy & Astrophysics ;  Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.91.103520
通讯作者: Xu, LX (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
文章类型: Article
英文摘要: In a modified gravity theory, the propagation equation of gravitational waves will be presented in a nonstandard way. Therefore this tensor mode perturbation of time-space, as a complement to the scalar mode perturbation, provides a unique character distinguishing modified gravity from general relativity. To avoid the model-dependent issue, in this paper, we propose a parametrized modification to the propagation of gravitational waves. We show the effects on the angular power spectrum of cosmic microwave background radiation due to the parametrized modification and its degeneracy to the tensor mode power spectrum index n(t) and its running at. Last, we report the current status on the detection of modified gravity through the currently available cosmic observations. Our results show no significant deviation to general relativity.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: BARYON ACOUSTIC-OSCILLATIONS ;  COSMOLOGICAL PERTURBATIONS ;  HUBBLE CONSTANT ;  GROWTH-RATE
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11275035] ;  Fundamental Research Funds for the Central Universities ;  Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences (People's Republic of China) [Y4KF101CJ1]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21001
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Recommended Citation:
Xu, LX. Gravitational waves: A test for modified gravity[J]. PHYSICAL REVIEW D,2015,91(10):103520.
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