{
  "abstract": "We investigate the possibility of probing a scalar-induced first-order phase transition (FOPT) inside core-collapse supernovae through the diffuse supernova neutrino background (DSNB). We consider a light scalar coupled to neutrinos that is produced and thermalised in the proto-neutron-star core. This leads to two distinct neutrino components: a prompt contribution from thermally produced scalars and a delayed, spectrally narrow contribution from the decay of coherent scalar excitations due to the FOPT. We study the resulting DSNB signal at Super-Kamiokande, Hyper-Kamiokande, and DUNE, finding a strong dependence on the neutrino mass ordering. The recent Super-Kamiokande data already constrain the scalar parameter space for inverted ordering and quasi-degenerate neutrino masses, while future detectors can significantly improve this sensitivity. Our results demonstrate that DSNB measurements can provide a novel probe of finite-temperature scalar dynamics in core-collapse supernovae.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.19271",
  "author_total": 3,
  "authors": [
    {
      "name": "Sudipta Das"
    },
    {
      "name": "Shamik Niyogi"
    },
    {
      "name": "Manibrata Sen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e2p580yr9g6r6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.19271",
  "fulltext_url": null,
  "id": "e2p580yr9g6r6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.19271",
  "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",
      "astro-ph.CO"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Neutrino Physics Research"
    ]
  ],
  "openalex": "W7213606657",
  "pdf_url": "https://arxiv.org/pdf/2609.19271",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e2p580yr9g6r6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:19Z",
      "native_id": "2609.19271",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.19271"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Probing Scalar-Induced First-Order Phase Transitions with the Diffuse Supernova Neutrino Background",
  "title_text": "Probing Scalar-Induced First-Order Phase Transitions with the Diffuse Supernova Neutrino Background",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:19Z",
  "url": "https://research.draconitic.com/paper/e2p580yr9g6r6",
  "venue": "arXiv",
  "versions": []
}