67 citations · 168 across the 5 of their papers we have counts for
6 papers
Exteriors to bouncing collapse models
Tim Schmitz
We construct a large class of spacetimes that are smoothly matched to homogeneous, spherically symmetric clouds of matter. The evolution of the clouds is left arbitrary to allow fo…
Quantum Oppenheimer-Snyder model
Włodzimierz Piechocki, Tim Schmitz
We construct two reduced quantum theories for the Oppenheimer-Snyder model, respectively taking the point of view of the comoving and the exterior stationary observer, using affine…
Hamiltonian formulation of dust cloud collapse
Nick Kwidzinski, Daniele Malafarina, Jan Ostrowski +2
We consider the gravitational collapse of self-gravitating spherical dust cloud in the Hamiltonian formalism. We address both homogeneous and inhomogeneous cases. Our novel derivat…
Towards a quantum Oppenheimer-Snyder model
Tim Schmitz
We present a consistent canonical formulation of the flat Oppenheimer-Snyder model, including the Schwarzschild exterior. The switching between comoving and stationary observer is…
Dependence of the affine coherent states quantization on the parametrization of the affine group
Andrzej Góźdź, Włodzimierz Piechocki, Tim Schmitz
The affine coherent states quantization is a promising integral quantization of Hamiltonian systems when the phase space includes at least one conjugate pair of variables which tak…
Singularity avoidance for collapsing quantum dust in the Lemaitre-Tolman-Bondi model
Claus Kiefer, Tim Schmitz
We investigate the fate of the classical singularity in a collapsing dust cloud. For this purpose, we quantize the marginally bound Lemaitre-Tolman-Bondi model for spherically-symm…