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gr-qc2025★ 2 cited
Double Wick rotations between symmetries of Taub-NUT, near-horizon extreme Kerr, and swirling spacetimes
Aimeric Colléaux, Ivan Kolář, Tomáš Málek
We explicitly show that certain 4-dimensional infinitesimal group actions with 3-dimensional orbits are related by double Wick rotations. In particular, starting with the symmetrie…
gr-qc2025
Degenerate higher-order Maxwell-Einstein theories
Aimeric Colléaux, Karim Noui
We classify higher-order Maxwell-Einstein theories linear in the curvature tensor and quadratic in the derivatives of the electromagnetic field strength whose kinetic matrices are…