Entropy (Aug 2017)

Harvesting Large Scale Entanglement in de Sitter Space with Multiple Detectors

  • Shingo Kukita,
  • Yasusada Nambu

DOI
https://doi.org/10.3390/e19090449
Journal volume & issue
Vol. 19, no. 9
p. 449

Abstract

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We consider entanglement harvesting in de Sitter space using a model of multiple qubit detectors. We obtain the formula of the entanglement negativity for this system. Applying the obtained formula, we find that it is possible to access to the entanglement on the super horizon scale if a sufficiently large number of detectors are prepared. This result indicates the effect of the multipartite entanglement is crucial for detection of large scale entanglement in de Sitter space.

Keywords