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math.DG2018
Singular Values of Riemann Curvature Tensor
Xiaokai He, Hua Xiang
We introduce the concept of singular values for the Riemann curvature tensor, a central mathematical tool in Einstein's theory of general relativity. We study the properties relate…
gr-qc2018★ 10 cited
Relationship between Bondi-Sachs quantities and source of gravitational radiation in asymptotically de Sitter spacetime
Xiaokai He, Jiliang Jing, Zhoujian Cao
Gravitational radiation plays an important role in astrophysics. Based on the fact that our universe is expanding, the gravitational radiation when a positive cosmological constant…