{
  "abstract": "Distinguishing rapid local energy exchange from sustained transport matters when thermal conductivity is inferred from finite simulations. In a weakly coupled chain of separable quartic oscillators, we identify a quantitative mechanism that changes an early Green--Kubo plateau: resonant neighbors exchange energy and coherently return it. The pair heat-current integral maps to the classical pendulum trapping response. Quartic homogeneity gives an energy-independent reference period $T_{\\rm lib}=7.77ε^{-1/2}$, where $ε$ is the coupling. Without fitted parameters, the leading response predicts a negative first minimum at $0.952T_{\\rm lib}$ with depth $-0.74$ times the independent-cell exchange coefficient. Isolated-pair simulations test this reference and resolve finite-coupling corrections. The chain reaches its first minimum on the same time scale, with a shallower minimum and a small later residual. Comparisons with chaotic cells and energy-conserving noise show regimes in which coherent return is absent or interrupted over the measured windows. These finite-time results provide a quantitative reference for separating the early exchange plateau from subsequent correlated dynamics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.30172",
  "author_total": 3,
  "authors": [
    {
      "name": "Julian Olszewski"
    },
    {
      "name": "Zijian Liu"
    },
    {
      "name": "Jie Xu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/76j19pwaymx3t.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.30172",
  "fulltext_url": null,
  "id": "76j19pwaymx3t",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.30172",
  "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",
      "cond-mat.stat-mech"
    ],
    [
      "openalex",
      "2505|Thermal properties of materials"
    ]
  ],
  "openalex": "W7223268380",
  "pdf_url": "https://arxiv.org/pdf/2610.30172",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-18",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/76j19pwaymx3t.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.30172",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.30172"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.stat-mech",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Resonant-pair energy return beyond the early Green-Kubo plateau in a quartic chain",
  "title_text": "Resonant-pair energy return beyond the early Green-Kubo plateau in a quartic chain",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/76j19pwaymx3t",
  "venue": "arXiv",
  "versions": []
}