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gr-qc2024
The evolution of expanding spacetime realizes approximate quantum cloning
Laura Niermann, Tobias J. Osborne
We investigate how quantum information, encoded in a quantum field, evolves during the expansion of spacetime. Due to information loss across the horizon, a local observer experien…
gr-qc2024
Particle detectors in superposition in de Sitter spacetime
Laura Niermann, Luis C. Barbado
Cosmological particle creation is the phenomenon by which the expansion of spacetime results in the production of particles of a given quantum field in that spacetime. In this pape…