28 citations · 46 across the 11 of their papers we have counts for
4 papers · 1 filter
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…
Neglected solutions in quadratic gravity
Breno L. Giacchini, Ivan Kolář
We report on several previously overlooked families of static spherically symmetric solutions in quadratic gravity. Our main result concerns the existence of solutions whose leadin…
Rotating Carroll Black Holes: A No Go Theorem
Ivan Kolář, David Kubiznak, Poula Tadros
Recently, there has been a lot of interest in Carroll black holes and in particular whether or not one could find a Carrollian analogue of a rotating black hole spacetime. Here we…
Black holes and other exact solutions in six-derivative gravity
Breno L. Giacchini, Ivan Kolář
We study exact static spherically symmetric vacuum solutions in generic six-derivative gravity (i.e., without assuming specific relations between the coupling constants). Using mod…