179 citations · 2k across the 114 of their papers we have counts for
9 papers · 1 filter
Inflation in de Sitter spacetime and CMB large scales anomaly
Dong Zhao, Ming-Hua Li, Ping Wang +1
The influence of cosmological constant type dark energy in the early universe is investigated. This is accommodated by a new dispersion relation in de Sitter spacetime. We perform…
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…
Comparison between hemisphere comparison method and dipole-fitting method in tracing the anisotropic expansion of the Universe use the Union2 dataset
Zhe Chang, Hai-Nan Lin
Type-Ia supernovae (SNe Ia) are often used as the standard candles to probe the anisotropic expansion of the Universe. In this paper, we make a comprehensive comparison between the…
CosmoMC Installation and Running Guidelines
Ming-Hua Li, Ping Wang, Zhe Chang +1
CosmoMC is a Fortran 95 Markov-Chain Monte-Carlo (MCMC) engine to explore the cosmological parameter space, plus a Python suite for plotting and presenting results (see http://cosm…
Gamma-ray polarization of synchrotron-self-Compton process from a highly relativistic jet
Zhe Chang, Hai-Nan Lin
The high polarization observed in the prompt phase of some gamma-ray bursts (GRBs) arouses extensive studies on the emission mechanism. In this paper, we investigate the polarizati…
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…