Description
de Sitter curvature enhances two-point correlations at super-Hubble
distances. Likewise, the von Neumann entropy of local patches is enhanced by
curvature, implying stronger entanglement between any compact region and its
complement. This talk will present a series of recent calculations of correlations
and entanglement between local observables (i.e. compactly supported) in bosonic
field theories in the cosmological patch of de Sitter space. We conclude that, when
restricting to local observables, curvature degrades entanglement. I will argue that
this result is compatible with previous studies based on entropy and correlation
measures, when properly interpreted. Our results reveal interesting features of how
entanglement in the de Sitter–invariant vacuum is spatially distributed. These
findings have implications for entanglement between observables generated
during cosmic inflation.
