Entangling power of an expanding universe

Ver Steeg, Greg and Menicucci, Nicolas C. (2009) Entangling power of an expanding universe. Physical Review D: Particles, Fields, Gravitation, and Cosmology, 79 4: 044027-1-044027-5. doi:10.1103/PhysRevD.79.044027

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ181508_OA.pdf Full text (open access) application/pdf 162.22KB 0

Author Ver Steeg, Greg
Menicucci, Nicolas C.
Title Entangling power of an expanding universe
Journal name Physical Review D: Particles, Fields, Gravitation, and Cosmology   Check publisher's open access policy
ISSN 0556-2821
Publication date 2009-02-14
Sub-type Article (original research)
DOI 10.1103/PhysRevD.79.044027
Open Access Status File (Publisher version)
Volume 79
Issue 4
Start page 044027-1
End page 044027-5
Total pages 5
Place of publication College Park, MD, U.S.A.
Publisher American Physical Society
Language eng
Formatted 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.
Keyword Particle creation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 63 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 61 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Thu, 03 Sep 2009, 18:33:27 EST by Mr Andrew Martlew on behalf of Physics