14 citations · 16 across the 4 of their papers we have counts for
4 papers
A reduced phase space quantisation of a model in Algebraic Quantum Gravity with polarised Gowdy symmetry
Kristina Giesel, Andreas Leitherer, David Winnekens
We consider a reduced phase space quantisation of a model with Gowdy symmetry in which gravity has been coupled to Gaussian dust. We complete the quantisation programme in re…
Analysing (cosmological) singularity avoidance in loop quantum gravity using U coherent states and Kummer's functions
Kristina Giesel, David Winnekens
Using a new procedure based on Kummer's Confluent Hypergeometric Functions, we investigate the question of singularity avoidance in loop quantum gravity (LQG) in the context of U$(…
Coherent States on the Circle: Semiclassical Matrix Elements in the Context of Kummer Functions and the Zak transformation
Kristina Giesel, David Winnekens
We extend former results for coherent states on the circle in the literature in two ways. On the one hand, we show that expectation values of fractional powers of momentum operator…
Dynamics of Dirac observables in canonical cosmological perturbation theory
Kristina Giesel, Parampreet Singh, David Winnekens
The relational formalism based on geometrical clocks and Dirac observables in linearized canonical cosmological perturbation theory is used to introduce an efficient method to find…