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Cai, RG; Guo, ZK; Yang, T; Cai, RG (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
Dodging the cosmic curvature to probe the constancy of the speed of light
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Language英语
KeywordSupernova Type Ia - Standard Candles Alternatives To Inflation
AbstractWe 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.
2016
Issue8Pages:16
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1088/1475-7516/2016/08/016
Indexed BySCI
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences [XD1309000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XD1309000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XD1309000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XD1309000000] ; National Natural Science Foundation of China [11575272, 11335012] ; National Natural Science Foundation of China [11575272, 11335012] ; National Natural Science Foundation of China [11575272, 11335012] ; National Natural Science Foundation of China [11575272, 11335012]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21570
Collection理论物理所科研产出_SCI期刊论文
Corresponding AuthorCai, RG (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Cai, RG,Guo, ZK,Yang, T,et al. Dodging the cosmic curvature to probe the constancy of the speed of light[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2016(8):16.
APA Cai, RG,Guo, ZK,Yang, T,&Cai, RG .(2016).Dodging the cosmic curvature to probe the constancy of the speed of light.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(8),16.
MLA Cai, RG,et al."Dodging the cosmic curvature to probe the constancy of the speed of light".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .8(2016):16.
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