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- W2097727557 abstract "A scalar field in the ground state, when partially hidden from observation by a spherical boundary, acquires entanglement entropy $S$ proportional to the area of the surface. This area law is well established in flat space, where it follows almost directly from dimensional arguments. We study its validity in an Einstein universe, whose curvature provides an additional physical parameter on which the entropy could, in principle, depend. The surprisingly simple result is that the entanglement entropy still scales linearly with the area. This is supported by other observations to the effect that the entanglement entropy arises mostly from degrees of freedom near the boundary, making it insensitive to the large-scale geometry of the background space." @default.
- W2097727557 created "2016-06-24" @default.
- W2097727557 creator A5063309005 @default.
- W2097727557 date "2013-09-27" @default.
- W2097727557 modified "2023-09-27" @default.
- W2097727557 title "Entanglement entropy of a scalar field across a spherical boundary in the Einstein universe" @default.
- W2097727557 cites W2158320533 @default.
- W2097727557 hasPublicationYear "2013" @default.
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