21 citations · 34 across the 6 of their papers we have counts for
3 papers · 1 filter
The Unruh state for bosonic Teukolsky fields on subextreme Kerr spacetimes
Dietrich Häfner, Christiane K. M. Klein
We perform the quantization of Teukolsky scalars of spin , , and within the algebraic approach to quantum field theory. We first discuss the classical phase space…
The Unruh state for massless fermions on Kerr spacetime and its Hadamard property
Christian Gérard, Dietrich Häfner, Michał Wrochna
We give a rigorous definition of the Unruh state in the setting of massless Dirac fields on slowly rotating Kerr spacetimes. In the black hole exterior region, we show that it is a…
Resolvent and propagation estimates for Klein-Gordon equations with non-positive energy
Vladimir Georgescu, Christian Gérard, Dietrich Häfner
We study in this paper an abstract class of Klein-Gordon equations: \[ \p_{t}^{2}ϕ(t)- 2ık \p_{t}ϕ(t)+ h ϕ(t)=0, \] where $ϕ: \rr\to \cH$, $\cH$ is a (complex) Hilbert space, and $…