Entanglement extracted from vacuum into accelerated Unruh-DeWitt detectors and energy conservation

Jun Ichirou Koga, Kengo Maeda, Gen Kimura

Research output: Contribution to journalArticle

Abstract

We consider a pair of two-level Unruh-DeWitt detectors accelerated uniformly in the Minkowski vacuum of a massless neutral scalar field and analyze, within the perturbation theory, the entanglement extracted from the vacuum into the Unruh-DeWitt detectors when the switching of the detectors is performed adiabatically enough at the asymptotic past and future. We consider the cases where the detectors are accelerated parallelly, antiparallelly, and in differently orientated directions. We show that entanglement is extracted if they are accelerated antiparallelly and the ratios of the excitation energy to the magnitude of the acceleration coincide between the two detectors. On the other hand, we find that the detectors are not entangled when the detectors are accelerated parallelly or in orientated directions. We discuss these results from the viewpoint of the energy conservation associated with the timelike boost Killing vector fields tangent to the worldlines of the detectors.

Original languageEnglish
Article number065013
JournalPhysical Review D
Volume100
Issue number6
DOIs
Publication statusPublished - 2019 Sep 23

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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