Does acceleration assist entanglement harvesting?

• URL: http://arxiv.org/abs/2111.04392v2
• Date: Thu, 21 Apr 2022 02:24:34 GMT
• Title: Does acceleration assist entanglement harvesting?
• Authors: Zhihong Liu, Jialin Zhang, Robert B. Mann and Hongwei Yu
• Abstract summary: We explore whether acceleration assists entanglement harvesting for a pair of uniformly accelerated detectors in three different acceleration scenarios. We find that acceleration is a mixed blessing insofar as it increases the harvested entanglement for a large detector energy gap. For very small acceleration and large energy gap, acceleration-assisted enhancement can happen in all three acceleration scenarios.
• Score: 6.255508552377236
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We explore whether acceleration assists entanglement harvesting for a pair of uniformly accelerated detectors in three different acceleration scenarios, i.e., parallel, anti-parallel and mutually perpendicular acceleration, both in the sense of the entanglement harvested and harvesting-achievable separation between the two detectors. Within the framework of entanglement harvesting protocols and the Unruh-DeWitt model of detectors locally interacting with massless scalar fields via a Gaussian switching function with an interaction duration parameter, we find that, in the sense of the entanglement harvested, acceleration is a mixed blessing insofar as it increases the harvested entanglement for a large detector energy gap relative to the interaction duration parameter, whilst inhibiting the entanglement harvested for a small energy gap. Regarding the harvesting-achievable separation range between the detectors, we further find that for very small acceleration and large energy gap, both relative to the duration parameter, acceleration-assisted enhancement can happen in all three acceleration scenarios. This is in sharp contrast to what was argued previously: that the harvesting-achievable range can be enhanced only for anti-parallel acceleration. However, for a not too small acceleration relative to the duration parameter and an energy gap larger than the acceleration, we find that only detectors in parallel acceleration possess a harvesting-achievable range larger than those at rest.

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