On the regularization of Kerr-NUT spacetime. i
Within the framework of teleparallel equivalent of general relativity (TEGR) theory, calculation of the total energy and momentum of Kerr-NUT spacetimes have been employed using two methods of the gravitational energy-momentum, which is coordinate independent, and the Riemannian connection 1-form, Γ̃ βα. It has been shown that the two methods give the same unacceptable result, i.e., divergent value. Therefore, a local Lorentz transformation that plays a role of a regularizing tool, which subtracts the inertial effects without distorting the true gravitational contribution, has been suggested. This transformation keeps the resulting spacetime to be a solution of the equations of motion of TEGR.
Nashed, Gamal G.L., "On the regularization of Kerr-NUT spacetime. i" (2012). Centre for Theoretical Physics. 129.