Knowledge Management System of Institute of Theoretical Physics, CAS
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.
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| Dodging the cosmic curvature to probe the constancy of the speed of light | |
| Source Publication | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
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| Language | 英语 |
| Keyword | Supernova Type Ia - Standard Candles Alternatives To Inflation |
| Abstract | 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. |
| 2016 | |
| Issue | 8Pages:16 |
| Subject Area | Astronomy & Astrophysics ; Physics |
| DOI | http://dx.doi.org/10.1088/1475-7516/2016/08/016 |
| Indexed By | SCI |
| Funding Organization | 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] ; 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] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/21570 |
| Collection | SCI期刊论文 |
| Corresponding Author | Cai, 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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| Dodging the cosmic c（369KB） | 开放获取 | -- | Application Full Text | |||
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