Journal
PHYSICAL REVIEW D
Volume 106, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.106.105001
Keywords
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Funding
- mobility grants program of Centre de Formacio Interdisciplin`aria Superior (CFIS)-Universitat Polit`ecnica de Catalunya (UPC)
- Mike and Ophelia Lazaridis Fellowship
- La Caixa Foundation [100010434, LCF/BQ/AA20/11820043]
- Discovery Grant Program of the Natural Sciences and Engineering Research Council of Canada (NSERC)
- Ontario Early Researcher award
- Government of Canada through the Department of Innovation, Science and Industry Canada
- Province of Ontario through the Ministry of Colleges and Universities
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We analyze the entanglement harvesting from particle detectors and field's initial states, and find that the entanglement harvested from a quasifree state of a scalar field by a pair of detectors is a covariant quantity up to second order in perturbation theory.
We analyze entanglement harvesting for arbitrary initial states of particle detectors and arbitrary quasifree states of the field. Despite the fact that spatially smeared particle detectors are known to break covariance for arbitrary initial states, we show that the entanglement harvested by a pair of detectors from a quasifree state of a scalar field is a covariant quantity up to second order in perturbation theory.
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