{
  "abstract": "We compare two time-reversal-symmetric triangular-lattice Hubbard models at half filling: the zero-flux model and a staggered $π$-flux model with zero and $π$ flux through oppositely oriented triangles. Although both reduce to the same Heisenberg model at leading order in the strong-coupling limit, their distinct charge fluctuation profiles yield different quantum paramagnetic regimes. Combining a strong-coupling expansion with infinite density matrix renormalization group (iDMRG) calculations, we find that the positive ring-exchange of the zero-flux model promotes spontaneous chirality, consistent with its notion of a chiral spin liquid at intermediate coupling. In the staggered-$π$-flux model, whose noninteracting limit is a Dirac semimetal, the ring exchange changes sign and disfavors chiral order and we find no resolvable scalar chirality. This renders flux-tuned ring-exchange an efficient discriminator between chiral and non-chiral quantum paramagnets at finite coupling.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.30290",
  "author_total": 3,
  "authors": [
    {
      "name": "Zhaochen Liu"
    },
    {
      "name": "Andreas Feuerpfeil"
    },
    {
      "name": "Ronny Thomale"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6nzngy8m5wq11.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.30290",
  "fulltext_url": null,
  "id": "6nzngy8m5wq11",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.30290",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.str-el"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.30290",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6nzngy8m5wq11.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.30290",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.30290"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "$π$-Flux Tuning of Quantum Paramagnetism in the Triangular-Lattice Hubbard Model",
  "title_text": "π-Flux Tuning of Quantum Paramagnetism in the Triangular-Lattice Hubbard Model",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/6nzngy8m5wq11",
  "venue": "arXiv",
  "versions": []
}