9 citations · 9 across the 2 of their papers we have counts for
2 papers
astro-ph.CO2015★ 9 cited
Reconstructing equation of state of dark energy with principal component analysis
Zhi-E Liu, Hao-Feng Qin, Jie Zhang +2
We represent a nonparametric method to reconstruct the equation of state for dark energy directly from observational Hubble parameter data. We use principal component analysis (PCA…
astro-ph.CO2014
Fluctuation of the Hubble parameter
Xi-Bin Li, Hao-Feng Qin, Zhi-Song Zhang +1
We study the Hubble parameter in perturbed Friedmann universe and obtain an expression of the perturbed Hubble parameter . We derive the Hubble parameter po…