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8 papers · 2 filters
The growth factor of matter perturbations in an f(R) gravity
Xiangyun Fu, Puxun Wu, Hongwei Yu
The growth of matter perturbations in the model proposed by Starobinsky is studied in this paper. Three different parametric forms of the growth index are considered respect…
Particle Acceleration on the Background of the Kerr-Taub-NUT Spacetime
Changqing Liu, Songbai Chen, Chikun Ding +1
We study the collision of two particles with the different rest masses moving in the equatorial plane of a Kerr-Taub-NUT spacetime and get the center-of-mass (CM) energy for the pa…
Strong gravitational lensing in a noncommutative black-hole spacetime
Chikun Ding, Shuai Kang, Chang-Yong Chen +2
Noncommutative geometry may be a starting point to a quantum gravity. We study the influence of the spacetime noncommutative parameter on the strong field gravitational lensing in…
Holographic Superconductors in Gauss-Bonnet gravity with Born-Infeld electrodynamics
Jiliang Jing, Liancheng Wang, Qiyuan Pan +1
We investigate the holographic superconductors in Gauss-Bonnet gravity with Born-Infeld electrodynamics. We find that the Gauss-Bonnet constant, the model parameters and the Born-I…
Probing the course of cosmic expansion with a combination of observational data
Zhengxiang Li, Puxun Wu, Hongwei Yu
We study the cosmic expansion history by reconstructing the deceleration parameter from the SDSS-II type Ia supernova sample (SNIa) with two different light curve fits (MLCS…
Extension of non-minimal derivative coupling theory and Hawking radiation in black-hole spacetime
Chikun Ding, Changqing Liu, Jiliang Jing +1
We study the greybody factor and Hawking radiation with a non-minimal derivative coupling between the scalar field and the curvature in the background of the slowly rotating Kerr-N…