Newman-Janis Algorithm from Taub-NUT Instantons
General Relativity and Quantum Cosmology
2026-01-21 v2 High Energy Physics - Theory
Abstract
It is shown that the Kerr metric represents the nonlinear superposition of self-dual and anti-self-dual Taub-NUT instantons. This promotes the Newman-Janis algorithm to a rigorous derivation of the Kerr metric with a definite physical origin. In the same way, the Kerr-Newman and charged Kerr-Taub-NUT solutions are systems of Taub-NUT instantons and chiral dyons.
Cite
@article{arxiv.2412.19611,
title = {Newman-Janis Algorithm from Taub-NUT Instantons},
author = {Joon-Hwi Kim},
journal= {arXiv preprint arXiv:2412.19611},
year = {2026}
}
Comments
7+3 pages, 4 figures