Gauge invariant variables for cosmological perturbation theory using geometrical clocks
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DOI: 10.1088/1361-6382/aacda2
Abstract: 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 choice of geometrical clocks in the relational formalism. We show… read more here.
Keywords: gauge; invariant variables; perturbation theory; gauge invariant ... See more keywords