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arXiv · 2205.01137

Extractable entanglement from a Euclidean hourglass

Takanori Anegawa·Norihiro Iizuka·Daniel Kabat
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Abstract

We previously proposed that entanglement across a planar surface can be obtained from the partition function on a Euclidean hourglass geometry. Here we extend the prescription to spherical entangling surfaces in conformal field theory. We use the prescription to evaluate log terms in the entropy of a CFT in two dimensions, a conformally-coupled scalar in four dimensions, and a Maxwell field in four dimensions. For Maxwell we reproduce the extractable entropy obtained by Soni and Trivedi. We take this as evidence that the hourglass prescription provides a Euclidean technique for evaluating extractable entropy in quantum field theory.

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Takanori Anegawa, Norihiro Iizuka, Daniel Kabat. 2022-05-02. Extractable entanglement from a Euclidean hourglass. https://doi.org/10.1103/physrevd.106.085010

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