论文标题
宇宙学量表因子的模型无关重建作为回溯时间的函数
Model-independent reconstruction of the cosmological scale factor as a function of lookback time
论文作者
论文摘要
我们提出了一种独立于模型的方法，可以从观察性哈勃参数数据（OHD）中重建比例时间。重建方法独立于动态模型，仅基于Friedmann-Robertson-Walker指标。我们还计算重建过程中误差的传播。重建数据错误主要来自梯形规则近似和OHD的不确定性。此外，在无量纲标准方法下讨论了原始OHD和重建A-T数据的模型歧视能力。与H-Z数据相比，A-T数据可以通过比较它们的变化系数，更清楚地呈现宇宙学模型之间的差异。最后，我们添加了五十个模拟的H（Z）数据，以估计未来观察的影响。将来更多的哈勃测量将有助于更准确地限制宇宙学参数。
We present a model-independent method of reconstructing scale factor against lookback time from the Observational Hubble parameter Data (OHD). The reconstruction method is independent of dynamical models and is only based on the Friedmann-Robertson-Walker metric. We also calculate the propagation of error in the reconstruction process. The reconstruction data errors mainly come from trapezoidal rule approximation and the uncertainty from OHD. Furthermore, the model discrimination ability of original OHD and reconstructed a-t data is discussed under a dimensionless standard method. a-t data can present the differences between cosmology models more clearly than H-z data by comparing their coefficients of variations. Finally, we add fifty simulated H(z) data to estimate the influence of future observation. More Hubble measurements in the future will help constrain cosmological parameters more accurately.
