Non-monotonic evolution of multipartite entanglement under the Unruh effect

@misc{wu2026nonmonotonic,
  title = {{Non-monotonic evolution of multipartite entanglement under the Unruh effect}},
  author = {Shu-Min Wu and Si-Han Shang and Si-Yu Liu and Rui-Yang Xu and Qianqian Liu and Xiao-Li Huang},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2605.24424},
  eprint = {2605.24424},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.24424},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Non-monotonic evolution of multipartite entanglement under the Unruh effect
AU  - Shu-Min Wu
AU  - Si-Han Shang
AU  - Si-Yu Liu
AU  - Rui-Yang Xu
AU  - Qianqian Liu
AU  - Xiao-Li Huang
PY  - 2026
DA  - 2026/09/03
PB  - arXiv
DO  - 10.48550/arxiv.2605.24424
UR  - https://arxiv.org/abs/2605.24424
AB  - We investigate the behavior of tetrapartite entanglement in a four-qubit Dicke state under relativistic motion by employing the Unruh-DeWitt detector model, where one detector undergoes uniform acceleration. We show that the entanglement exhibits a non-monotonic evolution: it first decreases and subsequently increases toward a finite value as the acceleration grows. In contrast to the conventional view that the Unruh effect leads to a monotonic degradation of multipartite entanglement, our results demonstrate that it can instead enhance multipartite entanglement within a finite parameter regime. This behavior reveals a dual role of the Unruh effect in multipartite systems. Our findings therefore provide a refined understanding of relativistic multipartite quantum correlations, indicating that Dicke states constitute more robust multipartite quantum resources against Unruh-induced decoherence and may offer advantages for relativistic quantum information processing tasks.
ER  -