35 citations · 58 across the 6 of their papers we have counts for
6 papers
Extremal Black Hole Weather
Claudio Iuliano, Stefan Hollands, Stephen R. Green +1
We consider weakly non-linear gravitational perturbations of a near-extremal Kerr black hole governed by the second order vacuum Einstein equation. Using the GHZ formalism [Green e…
Metric Reconstruction in Kerr Spacetime
Stefan Hollands, Vahid Toomani
Metric reconstruction is the general problem of parameterizing GR in terms of its two ``true degrees of freedom'', e.g., by a complex scalar ``potential'' -- in practice mostly wit…
Infinite quantum twisting at the Cauchy horizon of rotating black holes
Christiane Klein, Mojgan Soltani, Marc Casals +1
We present a numerical calculation of the expectation value of the quantum angular-momentum current flux density for a scalar field in the Unruh state near the inner horizon of a K…
Spin-2 Green's Functions on Kerr in Radiation Gauge
Marc Casals, Stefan Hollands, Adam Pound +1
We construct retarded and advanced Green's functions for gravitational perturbations in Kerr in an ingoing radiation gauge. Our Green's functions have a frequency domain piece that…
Relativistic perturbation theory for black-hole boson clouds
Enrico Cannizzaro, Laura Sberna, Stephen R. Green +1
We develop a relativistic perturbation theory for scalar clouds around rotating black holes. We first introduce a relativistic product and corresponding orthogonality relation betw…
Complexity in algebraic QFT
Stefan Hollands, Alessio Ranallo
We consider a notion of complexity of quantum channels in relativistic continuum quantum field theory (QFT) defined by the distance to the trivial (identity) channel. Our distance…