{
  "abstract": "The wave turbulence framework has proven to be an effective tool for analyzing certain features of nonlinear energy transfer in one-dimensional nonlinear chains. In this work, we extend this approach to the α α-FPUT problem when the spring stiffness χ χ and the nonlinear coefficient α α are site-dependent. Although three-wave interactions are non-resonant for constant coefficients, their spatial modulation gives rise to a non-trivial resonant manifold. In this framework, we derive a new kinetic equation that suggests the possibility of substantially faster thermalization than in the constant-coefficient case. The new kinetic equation also includes an additional term that can be associated with the Bragg-scattering mechanism, which promotes the isotropization of the wave-action spectral density function. We corroborate these results with direct numerical simulations, confirming the radically faster thermalization pathway in the presence of random coefficients.",
  "abstract_shown": true,
  "affiliations": [
    "Dipartimento di Fisica, Universitá degli Studi di Torino, Via P. Giuria 1, 10125 Turin, Italy",
    "Sezione di Torino, Istituto Nazionale di Fisica Nucleare, INFN, Via P. Giuria 1, 10125 Turin, Italy",
    "LISN, UMR 9015, CNRS, INRIA, Université Paris-Saclay, 91405 Orsay cedex, France"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Lorenzo Migliorelli"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Giovanni Dematteis",
      "orcid": "0000-0003-2918-8951"
    },
    {
      "affs": [
        2
      ],
      "name": "Sergio Chibbaro"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Miguel Onorato"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8xdkn2x3dt241.bib",
  "cited_by": 0,
  "doi": "10.1007/s10955-026-03724-w",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13731457/",
  "id": "8xdkn2x3dt241",
  "issns": [
    "0022-4715",
    "1572-9613"
  ],
  "landing_url": "https://doi.org/10.1007/s10955-026-03724-w",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Article"
    ],
    [
      "openalex",
      "3109|Nonlinear Waves and Solitons"
    ]
  ],
  "openalex": "W7162404688",
  "pdf_url": "https://link.springer.com/content/pdf/10.1007/s10955-026-03724-w.pdf",
  "pmcid": "PMC13731457",
  "pmid": "42984993",
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8xdkn2x3dt241.ris",
  "sources": [
    {
      "first_seen": "2026-11-08T12:21:39Z",
      "native_id": "PMC13731457",
      "source": "pmc",
      "url": "https://doi.org/10.1007/s10955-026-03724-w"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3109|Nonlinear Waves and Solitons",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Resonant Interactions in the α α-FPUT Lattice with Site-Dependent Coefficients",
  "title_text": "Resonant Interactions in the α α-FPUT Lattice with Site-Dependent Coefficients",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T12:21:39Z",
  "url": "https://research.draconitic.com/paper/8xdkn2x3dt241",
  "venue": "Journal of Statistical Physics",
  "versions": []
}