Entangled Detectors Nonperturbatively Harvest Mutual Information
- URL: http://arxiv.org/abs/2109.07495v2
- Date: Sun, 26 Dec 2021 20:23:07 GMT
- Title: Entangled Detectors Nonperturbatively Harvest Mutual Information
- Authors: Kensuke Gallock-Yoshimura, Robert B. Mann
- Abstract summary: We investigate how entangled Unruh-DeWitt inertial detectors are affected by interaction with a quantum field using a nonperturbative method.
We find that entanglement degradation is not reduced if communication via the field is possible; rather this only changes the manner in which entanglement is degraded.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We investigate how entangled inertial Unruh-DeWitt detectors are affected by
interaction with a quantum field using a nonperturbative method. Inertial
detectors in a $(3+1)$-dimensional Minkowski spacetime with instantaneous
switching ($\delta$-switching) experience degradation of their initial
entanglement as their coupling strength with a scalar field increases. Somewhat
surprisingly, initially separable or weakly entangled detectors can extract
mutual information from the vacuum. We also find that entanglement degradation
is not reduced if communication via the field is possible; rather this only
changes the manner in which entanglement is degraded.
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