{
  "abstract": "We investigate spin-outcome correlations and memory-assisted entropic uncertainty in tree-level Bhabha scattering, where an incident electron $A$ scatters with a positron $B$ initially entangled with a spectator electron $C$. For the fixed-angle post-selected final state, we compare the total memory-assisted uncertainty $U_A$ for three alternative Pauli measurements on $A$ with the entanglement entropy $S(ρ_A)$ across the $A|BC$ partition. We resolve $U_A$ into the separate uncertainties $U_B$ and $U_C$ and evaluate the corresponding outcome-memory mutual-information sums $G_B$ and $G_C$. This separates changes in the randomness of the outcomes on $A$ from changes in their correlations with each memory. In the parameter regions studied, enhanced $A|BC$ entanglement is accompanied by lower $U_A$, most prominently near high-energy backscattering. An analytic treatment of this limit shows that $B$ factorizes from $AC$: $G_B$ vanishes, whereas $G_C$ increases with the initial $B$-$C$ entanglement. An entropic complete complementarity analysis characterizes the accompanying loss of local helicity predictability in $ρ_A$ and changes in the coherence, predictability, and mixedness of the interacting pair $ρ_{AB}$. These results show that initial $B$-$C$ entanglement can lower the total memory-assisted uncertainty in high-energy backscattering by strengthening spin-outcome correlations with the spectator $C$, thereby identifying the distinct roles of the interacting particle and the spectator as quantum memories.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.11629",
  "author_total": 5,
  "authors": [
    {
      "name": "Zan Cao"
    },
    {
      "name": "Meng-Long Song"
    },
    {
      "name": "Xue-Ke Song"
    },
    {
      "name": "Liu Ye"
    },
    {
      "name": "Dong Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d22jz2ab2avw3.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.11629",
  "fulltext_url": null,
  "id": "d22jz2ab2avw3",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.11629",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-th"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Quantum Mechanics and Applications"
    ]
  ],
  "openalex": "W7221109158",
  "pdf_url": "https://arxiv.org/pdf/2610.11629",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/d22jz2ab2avw3.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.11629",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.11629"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Spin-outcome correlations and memory-assisted entropic uncertainty in Bhabha scattering with an entangled spectator",
  "title_text": "Spin-outcome correlations and memory-assisted entropic uncertainty in Bhabha scattering with an entangled spectator",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/d22jz2ab2avw3",
  "venue": "arXiv",
  "versions": []
}