Fables of reconstruction: controlling bias in the dark energy equation of state
文献类型：期刊论文
| 作者 | Crittenden, RG; Zhao, GB; Pogosian, L; Samushia, L; Zhang, XM; Zhang XM(张新民)
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| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
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| 出版日期 | 2012 |
| 期号 | 2页码:48 |
| 关键词 | dark energy experiments dark energy theory |
| 英文摘要 | We develop an efficient, non-parametric Bayesian method for reconstructing the time evolution of the dark energy equation of state w(z) from observational data. Of particular importance is the choice of prior, which must be chosen carefully to minimise variance and bias in the reconstruction. Using a principal component analysis, we show how a correlated prior can be used to create a smooth reconstruction and also avoid bias in the mean behaviour of w(z). We test our method using Wiener reconstructions based on Fisher matrix projections, and also against more realistic MCMC analyses of simulated data sets for Planck and a future space-based dark energy mission. While the accuracy of our reconstruction depends on the smoothness of the assumed w(z), the relative error for typical dark energy models is less than or similar to 10% out to redshift z = 1.5 |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000301176000049 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224400]  |
| 专题 | 高能物理研究所_理论物理室 |
| 推荐引用方式 GB/T 7714 | Crittenden, RG,Zhao, GB,Pogosian, L,et al. Fables of reconstruction: controlling bias in the dark energy equation of state[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2012(2):48. |
| APA | Crittenden, RG,Zhao, GB,Pogosian, L,Samushia, L,Zhang, XM,&张新民.(2012).Fables of reconstruction: controlling bias in the dark energy equation of state.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(2),48. |
| MLA | Crittenden, RG,et al."Fables of reconstruction: controlling bias in the dark energy equation of state".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .2(2012):48. |
入库方式： OAI收割
来源：高能物理研究所
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