{
  "abstract": "We apply our complex-scaled time-evolution operator to the two-proton decay of $^{6}$Be. The nucleus is described as an $α+p+p$ three-body system with explicit Jacobi-coordinate rearrangement and the realistic Argonne $v8'$ NN interaction for the proton-proton subsystem. Starting from a confined initial wave packet, the decay dynamics are described by expansion over the complex-scaled eigenstates of the final Hamiltonian. The decay width extracted from the late-time survival probability agrees closely with that obtained from the CSM resonance pole. The time-dependent densities in different Jacobi coordinates reveal complementary aspects of the evolving three-body geometry, while the spin-singlet component remains dominant during the decay. In particular, the correlated two-proton configuration persists even in the presence of the strong short-range repulsion of the realistic NN interaction. These results demonstrate the applicability of the complex-scaled time-evolution framework to explicit three-body decay dynamics and provide a consistent description of the decay width, spatial evolution, and spin correlations of $^{6}$Be.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.24076",
  "author_total": 3,
  "authors": [
    {
      "name": "Yuma Kikuchi"
    },
    {
      "name": "Kiyoshi Katō"
    },
    {
      "name": "Takayuki Myo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bywr13bzgmy9y.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.24076",
  "fulltext_url": null,
  "id": "bywr13bzgmy9y",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.24076",
  "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",
      "nucl-th"
    ],
    [
      "openalex",
      "3106|Nuclear physics research studies"
    ]
  ],
  "openalex": "W7214012306",
  "pdf_url": "https://arxiv.org/pdf/2609.24076",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bywr13bzgmy9y.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.24076",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.24076"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Time-evolution formalism in the complex scaling method: Application to the two-proton decay of $^{6}$Be",
  "title_text": "Time-evolution formalism in the complex scaling method: Application to the two-proton decay of ^6Be",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/bywr13bzgmy9y",
  "venue": "arXiv",
  "versions": []
}