Entanglement between accelerated probes in de Sitter spacetime varies independently with acceleration and curvature depending on detector motion configurations, unlike the single-probe effective-acceleration mapping.
Entangling Power of an Expanding Universe
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abstract
We show that entanglement can be used to detect spacetime curvature. Quantum fields in the Minkowski vacuum are entangled with respect to local field modes. This entanglement can be swapped to spatially separated quantum systems using standard local couplings. A single, inertial field detector in the exponentially expanding (de Sitter) vacuum responds as if it were bathed in thermal radiation in a Minkowski universe. We show that using two inertial detectors, interactions with the field in the thermal case will entangle certain detector pairs that would not become entangled in the corresponding de Sitter case. The two universes can thus be distinguished by their entangling power.
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gr-qc 1years
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Entanglement between accelerated probes in a de Sitter spacetime
Entanglement between accelerated probes in de Sitter spacetime varies independently with acceleration and curvature depending on detector motion configurations, unlike the single-probe effective-acceleration mapping.