Everything is entangled

We show that big bang cosmology implies a high degree of entanglement of particles in the universe. In fact, a typical particle is entangled with many particles far outside our horizon. However, the entanglement is spread nearly uniformly so that two randomly chosen particles are unlikely to be dire...

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Bibliographic Details
Published in:Physics letters. B 2012-12, Vol.718 (2), p.233-236
Main Authors: Buniy, Roman V., Hsu, Stephen D.H.
Format: Article
Language:English
Subjects:
Big bang cosmology
Density
Elementary particles
Entanglement
Horizon
Spreads
Universe
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Summary:We show that big bang cosmology implies a high degree of entanglement of particles in the universe. In fact, a typical particle is entangled with many particles far outside our horizon. However, the entanglement is spread nearly uniformly so that two randomly chosen particles are unlikely to be directly entangled with each other a the reduced density matrix describing any pair is likely to be separable.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2012.09.047