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

Atsushi Higuchi, Satoshi Iso, Kazushige Ueda, Kazuhiro Yamamoto

Research output: Contribution to journalArticle

10 Citations (Scopus)

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 languageEnglish
Article number083531
JournalPhysical Review D
Volume96
Issue number8
DOIs
Publication statusPublished - Oct 15 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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