{
  "abstract": "CDFCI is a shared-memory parallel numerical program for computing low-lying eigenpairs of large-scale, non-relativistic fermionic Hamiltonians. The software is designed to handle a broad class of many-body quantum models, including both ab initio electronic structure Hamiltonians and lattice-based Hamiltonians arising in condensed matter physics. CDFCI combines an efficient coordinate-descent-based selected configuration interaction algorithm with dedicated parallelization strategies, achieving high performance on modern multi-core architectures. Benchmark results on representative quantum chemistry and condensed matter test cases demonstrate that CDFCI attains state-of-the-art accuracy with competitive performance compared to established selected configuration interaction (such as CIPSI or SHCI) and DMRG implementations. The software is open-source, extensively documented, and provides a Python interface for seamless integration with PySCF and other many-body simulation workflows.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.04483",
  "author_total": 4,
  "authors": [
    {
      "name": "Yuejia Zhang"
    },
    {
      "name": "Zhe Wang"
    },
    {
      "name": "Jianfeng Lu"
    },
    {
      "name": "Yingzhou Li"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fknxzemvemtj6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.04483",
  "fulltext_url": null,
  "id": "fknxzemvemtj6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.04483",
  "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",
      "cs.NA"
    ],
    [
      "arxiv",
      "math.NA"
    ],
    [
      "arxiv",
      "physics.chem-ph"
    ],
    [
      "arxiv",
      "physics.comp-ph"
    ],
    [
      "openalex",
      "3107|Advanced Chemical Physics Studies"
    ]
  ],
  "openalex": "W7160520829",
  "pdf_url": "https://arxiv.org/pdf/2605.04483",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-17",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fknxzemvemtj6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:19Z",
      "native_id": "2605.04483",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.04483"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "arxiv:physics.chem-ph",
      "subfield": "physical"
    },
    {
      "field": "mathematics",
      "origin": "arxiv:math.NA",
      "subfield": "numerical-analysis"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.comp-ph",
      "subfield": "computational"
    }
  ],
  "title": "CDFCI: High-Performance Parallel Software for Quantum Many-Body Eigenvalue Problems",
  "title_text": "CDFCI: High-Performance Parallel Software for Quantum Many-Body Eigenvalue Problems",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:23Z",
  "url": "https://research.draconitic.com/paper/fknxzemvemtj6",
  "venue": "arXiv",
  "versions": []
}