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4 papers · 2 filters
Schrödinger Symmetry in Gravitational Mini-Superspaces
Jibril Ben Achour, Etera R. Livine, Daniele Oriti +1
We prove that the simplest gravitational symmetry reduced models describing cosmology and black holes mechanics are invariant under the Schrödinger group. We consider the flat FRW…
Dynamical symmetries of homogeneous minisuperspace models
Marc Geiller, Etera R. Livine, Francesco Sartini
We investigate the phase space symmetries and conserved charges of homogeneous gravitational minisuperspaces. These (0+1)-dimensional reductions of general relativity are defined b…
Intertwiner Entanglement Excitation and Holonomy Operator
Qian Chen, Etera R. Livine
In the loop quantum gravity framework, spin network states carry entanglement between quantum excitations of the geometry at different space points. This intertwiner entanglement i…
Classical dynamics for Loop Gravity: The 2-vertex model
Eneko Aranguren, Iñaki Garay, Etera R. Livine
The study of toy models in loop quantum gravity (LQG), defined as truncations of the full theory, is relevant to both the development of the LQG phenomenology, in cosmology and ast…