67 citations · 168 across the 5 of their papers we have counts for
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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…
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…