Entangling Power of an Expanding Universe

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dc.creatorSteeg, Greg Ver
dc.creatorMenicucci, Nicolas C.
dc.date2007-11-20
dc.date2009-02-24
dc.date.accessioned2026-07-07T12:54:32Z
dc.date.available2026-07-07T12:54:32Z
dc.descriptionWe 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.
dc.description5 pages, 2 figures; v5: final published version
dc.identifierhttps://arxiv.org/abs/0711.3066
dc.identifierhttp://arxiv.org/abs/0711.3066
dc.identifierPhys. Rev. D 79, 044027 (2009)
dc.identifierdoi:10.1103/PhysRevD.79.044027
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223968
dc.subjectQuantum Physics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleEntangling Power of an Expanding Universe
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