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gr-qc2018★ 34 cited
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…
gr-qc2017★ 15 cited
Gauge invariant canonical cosmological perturbation theory with geometrical clocks in extended phase space - a review and applications
Kristina Giesel, Adrian Herzog
The theory of cosmological perturbations is a well elaborated field. To deal with the diffeomorphism invariance of general relativity one generally introduces combinations of the m…