81 citations · 1.4k across the 54 of their papers we have counts for
4 papers · 1 filter
Nearly scale-invariant power spectrum and quantum cosmological perturbations in the gravity's rainbow scenario
Sai Wang, Zhe Chang
We propose the gravity's rainbow scenario as a possible alternative of the inflation paradigm to account for the flatness and horizon problems. We focus on studying the cosmologica…
Constraint on the primordial gravitational waves from the joint analysis of BICEP2 and Planck HFI 353 GHz dust polarization data
Cheng Cheng, Qing-Guo Huang, Sai Wang
We make a joint analysis of BICEP2 and recently released Planck HFI 353 GHz dust polarization data, and find that there is no evidence for the primordial gravitational waves and th…
Constraining the Anisotropy of the Universe from Supernovae and Gamma-ray Bursts
Zhe Chang, Xin Li, Hai-Nan Lin +1
Recently, an anisotropic cosmological model was proposed. An arbitrary 1-form, which picks out a privileged axis in the universe, was added to the Friedmann-Robertson-Walker line e…
Constraining anisotropy of the universe from different groups of type-Ia supernovae
Zhe Chang, Xin Li, Hai-Nan Lin +1
Recent released Planck data and other astronomical observations show that the universe may be anisotropic on large scales. Inspired by this, anisotropic cosmological models have be…