{
  "abstract": "We study the temperature dependence of meson screening masses in two-flavour lattice QCD using dynamical truncated overlap fermions, a type of lattice chiral fermions. The screening masses for the $π$, $ρ$, $a_1$, $a_0$, and the sigma $(f_0)$ mesons are extracted by computing spatial correlation functions. This exploratory study uses meson screening masses and the connected/disconnected decomposition of the scalar correlator as diagnostic observables to examine how the disconnected contribution changes across the pseudocritical region. Above the pseudocritical temperature $T_{\\rm pc}$, the $π$ and $f_0$ screening masses become degenerate, consistent with chiral restoration. The $(ρ,a_1)$ pair also shows the expected degeneracy. Decomposition of the $f_0$ propagator reveals that the connected contribution dominates above $T_{\\rm pc}$, while the disconnected part becomes significant below $T_{\\rm pc}$, explaining the reduced statistical clarity observed at low $T$. These results demonstrate that dynamical truncated overlap fermion simulations can capture the qualitative thermal behaviour of the scalar sector.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.07126",
  "author_total": 5,
  "authors": [
    {
      "name": "S. Date"
    },
    {
      "name": "Y. Murakami"
    },
    {
      "name": "M. Sekiguchi"
    },
    {
      "name": "H. Wada"
    },
    {
      "name": "M. Wakayama"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cj4stshfdbkr9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.07126",
  "fulltext_url": null,
  "id": "cj4stshfdbkr9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.07126",
  "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",
      "hep-lat"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7160852167",
  "pdf_url": "https://arxiv.org/pdf/2605.07126",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cj4stshfdbkr9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:26:45Z",
      "native_id": "2605.07126",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.07126"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-lat",
      "subfield": "high-energy"
    }
  ],
  "title": "The sigma meson ($f_0$) at finite temperature with truncated overlap fermions",
  "title_text": "The sigma meson (f_0) at finite temperature with truncated overlap fermions",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:45Z",
  "url": "https://research.draconitic.com/paper/cj4stshfdbkr9",
  "venue": "arXiv",
  "versions": []
}