Xuejun Yang

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gr-qc2003

Killing Reduction of 5-Dimensional Spacetimes

Xuejun Yang, Yongge Ma, Jianbing Shao +1

In a 5-dimensional spacetime ( $M, g_{ab}$ ) with a Killing vector field $ξ^{a}$ which is either everywhere timelike or everywhere spacelike, the collection of all trajectories of $ξ^{a}$ …

gr-qc2002

Actions for Vacuum Einstein's Equation with a Killing Symmetry

Han He, Yongge Ma, Xuejun Yang

In a space-time $M$ with a Killing vector field $ξ^{a}$ which is either everywhere timelike or everywhere spacelike, the collection of all trajectories of $ξ^{a}$ gives a 3-dimension s…