{
  "abstract": "We study the spectrum of two-dimensional Yukawa theory using Hamiltonian truncation, with a focus on bound states. We extend the framework of Hamiltonian truncation effective theory to include fermions and logarithmic UV divergences. With these corrections, the energy levels converge as a function of the cutoff with the scaling predicted by power counting. We identify a strategy to follow the evolution of fermion-antifermion bound states from weak to strong coupling, and investigate its binding energy, finding good agreement with finite-volume perturbation theory at weak coupling. Finally, we explore the heavy-scalar regime toward the massive Thirring/Sine-Gordon limit, recovering the expected weak-coupling behavior and outlining how the calculation can be extended toward this limit.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.31504",
  "author_total": 3,
  "authors": [
    {
      "name": "Olivier Delouche"
    },
    {
      "name": "Kara Farnsworth"
    },
    {
      "name": "Francesco Riva"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cmehxkha7zdxs.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.31504",
  "fulltext_url": null,
  "id": "cmehxkha7zdxs",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.31504",
  "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"
    ],
    [
      "arxiv",
      "hep-lat"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7214590278",
  "pdf_url": "https://arxiv.org/pdf/2609.31504",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-25",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cmehxkha7zdxs.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:52Z",
      "native_id": "2609.31504",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.31504"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-lat",
      "subfield": "high-energy"
    }
  ],
  "title": "Bound States in 2d Yukawa Theory from Hamiltonian Truncation",
  "title_text": "Bound States in 2d Yukawa Theory from Hamiltonian Truncation",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:52Z",
  "url": "https://research.draconitic.com/paper/cmehxkha7zdxs",
  "venue": "arXiv",
  "versions": []
}