{
  "abstract": "We present a quantum Monte Carlo study of the transition between the insulating Néel state and the nodal $d$-wave superconductor on the square lattice at half-filling. We access a regime of frustrated magnetic order without a sign problem using a parton representation of the electron in terms of fermionic spinons and bosonic chargons. Both partons move in a background $π$-flux (so the electron experiences no net flux) and are coupled to a quantum fluctuating SU(2) lattice gauge field. In contrast to earlier studies directly on the electronic degrees of freedom, we find evidence for a second-order deconfined quantum phase transition at which both the Néel and $d$-wave superconductivity orders vanish continuously. We compute correlators of the spinon-chargon composite with the same quantum numbers as the electron: we find a gapless Dirac dispersion inside the $d$-wave superconductor, turning into a gapped dispersion in the antiferromagnet.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Proceedings of the National Academy of Sciences 123, e2623874123 (2026)",
  "arxiv": "2607.00762",
  "author_total": 3,
  "authors": [
    {
      "name": "Chuang Chen"
    },
    {
      "name": "Subir Sachdev"
    },
    {
      "name": "Zi Yang Meng"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3th6qr0d4yxtb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.00762",
  "fulltext_url": null,
  "id": "3th6qr0d4yxtb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.00762",
  "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.str-el"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2607.00762",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3th6qr0d4yxtb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2607.00762",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.00762"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Deconfined criticality between an antiferromagnetic insulator and a nodal d-wave superconductor: a quantum Monte Carlo study",
  "title_text": "Deconfined criticality between an antiferromagnetic insulator and a nodal d-wave superconductor: a quantum Monte Carlo study",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/3th6qr0d4yxtb",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1073/pnas.2623874123",
      "pid": "2rz254kmxax0p",
      "relation": "published-as",
      "title": "Deconfined criticality between an antiferromagnetic insulator and a nodal d-wave superconductor: A quantum Monte Carlo study",
      "venue": "Proceedings of the National Academy of Sciences of the United States of America"
    }
  ]
}