297 citations · 4k across the 84 of their papers we have counts for
85 papers
Hidden Symmetry of Kerr-deSitter from Manifest Symmetry of Painlevé VI
Stefan Hollands, Akihiro Ishibashi, Jochen Zahn
We show that the recently discovered ``mass symmetries" of the radial Teukolsky equation for Kerr-deSitter black holes can be understood from a corresponding symmetry of the Painle…
The Entropy of Dynamical Black Holes
Stefan Hollands, Robert M. Wald, Victor G. Zhang
We propose a new formula for the entropy of a dynamical black holevalid to leading order for perturbations off of a stationary black hole backgroundin an arbitrary classical…
The Operator Product Expansion in Quantum Field Theory
Stefan Hollands, Robert M. Wald
Operator product expansions (OPEs) in quantum field theory (QFT) provide an asymptotic relation between products of local fields defined at points and local field…
A stationary black hole must be axisymmetric in effective field theory
Stefan Hollands, Akihiro Ishibashi, Harvey S. Reall
The black hole rigidity theorem asserts that a rotating stationary black hole must be axisymmetric. This theorem holds for General Relativity with suitable matter fields, in four o…
Conserved currents for Kerr and orthogonality of quasinormal modes
Stephen R. Green, Stefan Hollands, Laura Sberna +2
We introduce a bilinear form for Weyl scalar perturbations of Kerr. The form is symmetric and conserved, and we show that, when combined with a suitable renormalization prescriptio…
GGI Lectures on Entropy, Operator Algebras and Black Holes
Stefan Hollands
These are extended notes for my lectures at the workshop ``Reconstructing the Gravitational Hologram'' held at Galileo-Galilei Institute, Florence, in June 2022.