38 citations · 291 across the 27 of their papers we have counts for
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Dynamical Properties of the Mukhanov-Sasaki Hamiltonian in the context of adiabatic vacua and the Lewis-Riesenfeld invariant
Max Joseph Fahn, Kristina Giesel, Michael Kobler
We use the method of the Lewis-Riesenfeld invariant to analyze the dynamical properties of the Mukhanov-Sasaki Hamiltonian and, following this approach, investigate whether we can…
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…
Gauge invariant variables for cosmological perturbation theory using geometrical clocks
Kristina Giesel, Adrian Herzog, Parampreet Singh
Using the extended ADM-phase space formulation in the canonical framework we analyze the relationship between various gauge choices made in cosmological perturbation theory and the…