Entanglement structure of quantum fields through local probes

• URL: http://arxiv.org/abs/2301.08775v2
• Date: Fri, 12 May 2023 13:59:46 GMT
• Title: Entanglement structure of quantum fields through local probes
• Authors: Bruno de S. L. Torres, Kelly Wurtz, Jos\'e Polo-G\'omez, Eduardo Mart\'in-Mart\'inez
• Abstract summary: This framework can be used to faithfully capture entanglement in a QFT between arbitrary-shaped regions of spacetime without encountering UV divergences. Our results also establish the limits of the efficiency of entanglement harvesting, and may also be used to motivate an operational definition of entanglement between spacetime subregions in field theory.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present a framework to study the entanglement structure of a quantum field theory inspired by the formalism of particle detectors in relativistic quantum information. This framework can in principle be used to faithfully capture entanglement in a QFT between arbitrary-shaped regions of spacetime without encountering UV divergences, bypassing many of the issues typically present in other approaches. Our results also establish the limits of the efficiency of entanglement harvesting, and may also be used to motivate an operational definition of entanglement between spacetime subregions in field theory.

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