Entanglement from the vacuum

Benni Reznik*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

220 Scopus citations


We explore the entanglement of the vacuum of a relativistic field by letting a pair of causally disconnected probes interact with the field. We find that, even when the probes are initially non-entangled, they can wind up to a final entangled state. This shows that entanglement persists between disconnected regions in the vacuum. However the probe entanglement, unlike correlations, vanishes once the regions become sufficiently separated. The relation between entropy, correlations and entanglement is discussed.

Original languageEnglish
Pages (from-to)167-176
Number of pages10
JournalFoundations of Physics
Issue number1
StatePublished - Jan 2003


FundersFunder number
Israel MOD Research and Technology Unit
Israel Science Foundation


    • Entanglement
    • Entanglement probes
    • Entropy
    • Vacuum state


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