13 citations · 46 across the 10 of their papers we have counts for
10 papers
Cosmology of a polynomial model for de Sitter gauge theory sourced by a fluid
Jia-An Lu
In the de Sitter gauge theory (DGT), the fundamental variables are the de Sitter (dS) connection and the gravitational Higgs/Goldstone field . Previously, a model for DGT was…
de Sitter-covariant Hamiltonian formalism of Einstein--Cartan gravity
Jia-An Lu
The Hamiltonian formalism of Einstein--Cartan (EC) gravity is a starting point for canonical quantum gravity. The existing formalisms are at most Lorentz covariant, or diffeomorphi…
On the difference between Poincaré and Lorentz gravity
Jia-An Lu
The Poincaré invariance of GR is usually interpreted as Lorentz invariance plus diffeomorphism invariance. In this paper, by introducing the local inertial coordinates (LIC), it is…
Energy, momentum and angular momentum conservations in de Sitter gravity
Jia-An Lu
In de Sitter (dS) gravity, where gravity is a gauge field introduced to realize the local dS invariance of the matter field, two kinds of conservation laws are derived. The first k…
Energy, momentum and angular momentum conservations in de Sitter special relativity
Jia-An Lu
In de Sitter (dS) special relativity (SR), two kinds of conserved currents are derived. The first kind is a 5-dimensional (5d) dS-covariant angular momentum (AM) current, which uni…
Cosmological meaning of the gravitational gauge group
Jia-An Lu
It is shown that among the R+beta S^{abc}S_{abc} models, only the one with beta=1/2 has nonvanishing torsion effect in the Robertson--Walker universe filled with a spin fluid, wher…
A Kaluza--Klein-like model of the gauge theory of gravity and its cosmological meaning
Jia-An Lu
A new Kaluza--Klein-like (KK-like) model of the de Sitter gauge theory of gravity is constructed from the geometry related to the gauge-invariant expressions of the gravitational f…
Kaluza--Klein-type models of de Sitter and Poincaré gauge theories of gravity
Jia-An Lu, Chao-Guang Huang
We construct Kaluza--Klein-type models with a de Sitter or Minkowski bundle in the de Sitter or Poincaré gauge theory of gravity, respectively. A manifestly gauge-invariant formali…
Weak field approximation in a model of de Sitter gravity: Schwarzschild-de Sitter solutions
Jia-An Lu, Chao-Guang Huang
The weak field approximation in a model of de Sitter gravity is investigated in the static and spherically symmetric case, under the assumption that the vacuum spacetime without pe…
Weak field approximation in a model of de Sitter gravity: Schwarzschild solutions and galactic rotation curves
Jia-An Lu, Chao-Guang Huang
Weak field approximate solutions in the Lambda-->0 limit of a model of de Sitter gravity have been presented in the static and spherically symmetric case. Although the model looks…