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ITP OpenIR  > 理论物理所2016年知识产出  > 期刊论文
题名: Dodging the cosmic curvature to probe the constancy of the speed of light
作者: Cai, RG ;  Guo, ZK ;  Yang, T
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2016
期号: 8, 页码:16
关键词: Supernova type Ia - standard candles ;  alternatives to inflation
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1088/1475-7516/2016/08/016
通讯作者: Cai, RG (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: We develop a new model-independent method to probe the constancy of the speed of light c. In our method, the degeneracy between the cosmic curvature and the speed of light can be eliminated, which makes the test more natural and general. Combining the independent observations of-Hubble parameter H(z) and luminosity distance d(L)(z), we use the model-independent smoothing technique, Gaussian processes, to reconstruct them and then detect variation of the speed of light. We find no signal of deviation from the present value of the speed of light c(0). Moreover, to demonstrate the improvement in probing the constancy of the speed of light from future experiments, we produce a series of simulated data. The Dark Energy Survey will be able to detect Delta c/c(0) similar to 1% at similar to 1.5 sigma confidence level and Delta c/c(0) similar to 2% at similar to 3 sigma confidence level. If the errors are reduced to one-tenth of the expected DES ones, it can detect a Delta c/c(0) similar to 0.1% variation at similar to 2 sigma confidence level.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: DARK ENERGY SURVEY ;  HUBBLE PARAMETER ;  CONSTRAINTS ;  EXPANSION ;  GALAXIES ;  GROWTH
收录类别: SCI
项目资助者: Strategic Priority Research Program of the Chinese Academy of Sciences [XD1309000000] ;  National Natural Science Foundation of China [11575272, 11335012]
语种: 英语
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内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21570
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, RG,Guo, ZK,Yang, T. Dodging the cosmic curvature to probe the constancy of the speed of light[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2016(8):16.
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