4 papers
Geodesic Focusing Conditions in Gravity
Chao-Qiang Geng, Chunhui Liu, Ling-Wei Luo +1
We study the geodesic deviation equation in symmetric teleparallel geometry (STG), where the relative acceleration is defined with respect to the STG connection. We analyze the mod…
Regularization of Gauss-Bonnet Gravity in Riemann-Cartan Geometry
Jianhui Qiu, Ling-Wei Luo, Chunhui Liu +1
We extend the conformal dimensional-derivative regularization of four-dimensional Gauss- Bonnet gravity to Riemann-Cartan geometry, obtaining a regularized action whose torsionless…
Thermodynamic of the universe
Haomin Rao, Chunhui Liu, Chao-Qiang Geng
We investigate thermodynamics of apparent horizon in the universe with trivial and nontrivial connections. We first explore the perspectives of the first law, generalized se…
Gravitational wave in symmetric teleparallel gravity with different connections
Haomin Rao, Chunhui Liu, Chao-Qiang Geng
We investigate the cosmological perturbations around all three branches of spatially flat universe with different connections in symmetric teleparallel gravity. The model we consid…