125 citations · 316 across the 5 of their papers we have counts for
5 papers
Notes on Ghost Dark Energy
Rong-Gen Cai, Qiping Su, Zhong-Liang Tuo +1
We study a phenomenological dark energy model which is rooted in the Veneziano ghost of QCD. In this dark energy model, the energy density of dark energy is proportional to Hubble…
Scalar graviton in the healthy extension of Hořava-Lifshitz theory
Rong-Gen Cai, Bin Hu, Hong-Bo Zhang
In this note we study the linear dynamics of scalar graviton in a de Sitter background in the infrared limit of the healthy extension of Hořava-Lifshitz gravity with the dynamical…
Acoustic signatures in the Cosmic Microwave Background bispectrum from primordial magnetic fields
Rong-Gen Cai, Bin Hu, Hong-Bo Zhang
Using the full radiation transfer function, we numerically calculate the CMB angular bispectrum seeded by the compensated magnetic scalar density mode. We find that, for the string…
Probing the dynamical behavior of dark energy
Rong-Gen Cai, Qiping Su, Hong-Bo Zhang
We investigate dynamical behavior of the equation of state of dark energy by employing the linear-spline method in the region of low redshifts from observational data (SnI…
Dynamical Scalar Degree of Freedom in Horava-Lifshitz Gravity
Rong-Gen Cai, Bin Hu, Hong-Bo Zhang
We investigate the linear cosmological perturbations of Hořava-Lifshitz gravity in a FRW universe without any matter. Our results show that a new gauge invariant dynamical scalar m…