Entanglement of the vacuum between left, right, future, and past spacetime states: The origin of entanglement-induced quantum radiation

Atsushi Higuchi; Kazuhiro Yamamoto; Kazushige Ueda; Satoshi Iso

doi:10.1103/PhysRevD.96.083531

Entanglement of the vacuum between left, right, future, and past spacetime states: The origin of entanglement-induced quantum radiation

Atsushi Higuchi, Kazuhiro Yamamoto, Kazushige Ueda, Satoshi Iso

Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

The Minkowski vacuum state is expressed as an entangled state between the left and right Rindler wedges when it is constructed on the Rindler vacuum. In this paper, we further examine the entanglement structure and extend the expression to the future (expanding) and past (shrinking) Kasner spacetimes. This clarifies the origin of the quantum radiation produced by an Unruh–DeWitt detector in uniformly accelerated motion in the four-dimensional Minkowski spacetime. We also investigate the two-dimensional massless case where the quantum radiation vanishes but the same entanglement structure exists.

Original language	English
Article number	083531
Pages (from-to)	1-24
Number of pages	25
Journal	Physical Review D
Volume	96
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevD.96.083531
Publication status	Published - 31 Oct 2017

Bibliographical note

© 2017 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

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Cite this

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