39 citations · 39 across the 2 of their papers we have counts for
5 papers
Ladder Symmetries of Higher Dimensional Black Holes
Roman Berens, Lam Hui, Daniel McLoughlin +2
We compute the ladder operators for static tidal perturbations to higher-dimensional black holes. These operators map between solutions of the relevant equation of motion at differ…
Geometric Symmetries for the Vanishing of the Black Hole Tidal Love Numbers
Roman Berens, Lam Hui, Daniel McLoughlin +2
We present a unified geometric perspective on the symmetries underlying the spin 0, 1 and 2 static perturbations around a Schwarzschild black hole. In all cases, the symmetries are…
Ladder Symmetries of Black Holes and de Sitter Space: Love Numbers and Quasinormal Modes
Roman Berens, Lam Hui, Zimo Sun
In this note, we present a synopsis of geometric symmetries for (spin 0) perturbations around (4D) black holes and de Sitter space. For black holes, we focus on static perturbation…
Charging up Boosted Black Holes
Prakruth Adari, Roman Berens, Janna Levin
Contrary to a prevailing assumption that black holes would swiftly discharge, we argue that black holes can charge preferentially when boosted through an ambient magnetic field. Th…
Gravitational Collapse in Massive Gravity on de Sitter Spacetime
Roman Berens, Luke Krauth, Rachel A. Rosen
We analyze the evolution of a homogenous and pressureless ball of dust (or "star") in ghost-free massive gravity on de Sitter spacetime. We find that gravitational collapse does no…