In de Sitter space, two harmonic oscillators coupled by a massless scalar field develop late-time entanglement that is sizeable when frequency and separation are near the Hubble scale, and tiny otherwise.
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Manifestation of quantum entanglement between harmonic oscillators in de Sitter
In de Sitter space, two harmonic oscillators coupled by a massless scalar field develop late-time entanglement that is sizeable when frequency and separation are near the Hubble scale, and tiny otherwise.