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PreprintCC BY 4.0arXiv

Geometric quantum discord in the black hole quantum atmosphere

  • Siwei Li
  • Xiaofen Huang
Open at sourcePDFDOICite

Abstract

We investigate the geometric quantum discord of bipartite Werner states influenced by Hawking radiation in the quantum atmosphere of a Schwarzschild black hole. We find that the geometric quantum discord in the physically accessible region exhibits a nonmonotonic behavior: it first decreases and then increases as the normalized radial distance increases, while the discord in the physically inaccessible region shows the exact opposite trend. A pronounced extremum of geometric quantum discord occurs precisely at the position corresponding to the peak intensity of Hawking radiation. Furthermore, we find that the Hartle Hawking constant and the event horizon radius exert opposite effects on the strength of quantum correlation redistribution: a larger Hartle Hawking constant enhances the redistribution effect, whereas a larger event horizon radius suppresses it.

Versions

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Cite

BibTeXRIS
BibTeX
@misc{li2026geometric,
  title = {{Geometric quantum discord in the black hole quantum atmosphere}},
  author = {Siwei Li and Xiaofen Huang},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2607.16641},
  eprint = {2607.16641},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.16641},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Geometric quantum discord in the black hole quantum atmosphere
AU  - Siwei Li
AU  - Xiaofen Huang
PY  - 2026
DA  - 2026/09/25
PB  - arXiv
DO  - 10.48550/arxiv.2607.16641
UR  - https://arxiv.org/abs/2607.16641
AB  - We investigate the geometric quantum discord of bipartite Werner states influenced by Hawking radiation in the quantum atmosphere of a Schwarzschild black hole. We find that the geometric quantum discord in the physically accessible region exhibits a nonmonotonic behavior: it first decreases and then increases as the normalized radial distance increases, while the discord in the physically inaccessible region shows the exact opposite trend. A pronounced extremum of geometric quantum discord occurs precisely at the position corresponding to the peak intensity of Hawking radiation. Furthermore, we find that the Hartle Hawking constant and the event horizon radius exert opposite effects on the strength of quantum correlation redistribution: a larger Hartle Hawking constant enhances the redistribution effect, whereas a larger event horizon radius suppresses it.
ER  -