{
  "abstract": "Capturing static and dynamic electron correlation simultaneously at manageable computational cost remains a key challenge in electronic structure theory. Motivated by the recurring role of effective temperature in self-consistent field methods we extend the adiabatic connection mechanism from density functional theory to include a temperature dimension. This gives rise to thermally enhanced hybrid functionals, in which static correlation is captured via fractional occupations generated by an effective \"correlation temperature\" within thermal Hartree-Fock, while dynamic correlation is described by established density functional approximations. The framework formally unifies information-density matrix functional theory (i-DMFT) and thermally-assisted-occupation (TAO-)DFT as special cases, clarifying their theoretical basis and the respective prescriptions for the temperature parameter. We assess the performance of several thermally enhanced hybrids for different cases where i-DMFT was previously shown to fail. Furthermore, we discuss and test different schemes for determining the correlation temperature and investigate the accuracy of different such choices for a benchmark set derived from biphenyl. The results help to clarify the achievable balance of accuracy, generality, and efficiency, establishing thermally enhanced hybrids as a systematic route toward low-cost treatment of both correlation types.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.22284",
  "author_total": 4,
  "authors": [
    {
      "name": "Florian Matz"
    },
    {
      "name": "Paul G. Graf"
    },
    {
      "name": "Markus Penz"
    },
    {
      "name": "Christian Schilling"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6sgy2sr5ry01y.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.22284",
  "fulltext_url": null,
  "id": "6sgy2sr5ry01y",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.22284",
  "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",
      "physics.chem-ph"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Advanced Chemical Physics Studies"
    ]
  ],
  "openalex": "W7222614430",
  "pdf_url": "https://arxiv.org/pdf/2610.22284",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6sgy2sr5ry01y.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.22284",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.22284"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "arxiv:physics.chem-ph",
      "subfield": "physical"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Adding Temperature to the Adiabatic Connection: Hybrid Functionals for Static and Dynamic Correlation",
  "title_text": "Adding Temperature to the Adiabatic Connection: Hybrid Functionals for Static and Dynamic Correlation",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:50Z",
  "url": "https://research.draconitic.com/paper/6sgy2sr5ry01y",
  "venue": "arXiv",
  "versions": []
}