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

@article{Koga2019EntanglementEF,
  title={Entanglement extracted from vacuum into accelerated Unruh-DeWitt detectors and energy conservation},
  author={Jun Koga and Kengo Maeda and Gen Kimura},
  journal={Physical Review D},
  year={2019}
}
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 are performed adiabatically enough at the asymptotic past and future. We consider the cases where the detectors are accelerated parallelly, anti-parallelly, and in differently orientated directions. We show… 

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