2 papers
gr-qc2026
Constructing the canonical harmonic coordinates of Kerr metric to the fourth post-Minkowskian order
Zizheng Xing, Xiaokai He, Zhoujian Cao
In this paper we construct the canonical harmonic coordinates of the Kerr metric within the multipolar post-Minkowskian (MPM) formalism to the fourth post-Minkowskian (4PM) order.…
gr-qc2024
On the transverse-traceless gauge condition when matters are presented
Yadong Xue, Xiaokai He, Zhoujian Cao
The transverse-traceless gauge condition is an important concept in the theory of gravitational wave. It is well known that vacuum is one of the key conditions to guarantee the exi…