16 citations · 16 across the 1 of their papers we have counts for
5 papers
Singularity resolution from polymer quantum matter
Andreas Kreienbuehl, Tomasz Pawlowski
We study the polymeric nature of quantum matter fields using the example of a Friedmann-Lemaitre-Robertson-Walker universe sourced by a minimally coupled massless scalar field. The…
Model for gravitational collapse in effective quantum gravity
Andreas Kreienbuehl, Viqar Husain, Sanjeev S. Seahra
We describe a non-perturbative approach to studying the gravitational collapse of a scalar field in spherical symmetry with quantum gravity corrections. Quantum effects are describ…
Modified general relativity as a model for quantum gravitational collapse
Andreas Kreienbuehl, Viqar Husain, Sanjeev S. Seahra
We study a class of Hamiltonian deformations of the massless Einstein-Klein-Gordon system in spherical symmetry for which the Dirac constraint algebra closes. The system may be reg…
Ultraviolet behavior in background independent quantum field theory
Viqar Husain, Andreas Kreienbuehl
We describe a background independent quantization of the scalar field that provides an explicit realization of Fock-like states and associated operators in a polymer Hilbert space.…
Singularity avoidance and time in quantum gravity
Andreas Kreienbuehl
We consider the quantization of a Friedmann-Robertson-Walker universe. We derive a reduced square root Hamiltonian by choosing the scale factor as time variable and quantize the th…