2 papers
hep-th2026
Four-dimensional Stationary Algebraically Special Solutions, Weyl Invariants, and Soft Hairs Beyond Large Gauge Transformations
H. Lu, Pujian Mao
We revisit the Ricci-flat metrics in four dimensions that are stationary and algebraically special, together with the locally asymptotically flat conditions in the generalized Bond…
gr-qc2025
Note on identifying four-dimensional vacuum solutions from Weyl invariants
Pujian Mao
The diffeomorphism covariance is a fundamental property of General Relativity which leads to the fact that the same solution of Einstein equation can be given in completely distinc…