{
  "abstract": "We study the impact of a first-order phase transition from hadronic to deconfined quark matter on the evolution of proto-neutron stars. To maximize the applicability of our results, we construct an equation of state that is highly parameterizable, where we use a relativistic mean field approach to model hadronic matter and a constant speed of sound approach to model quark matter. We approximate the cooling behavior of proto-neutron stars as a sequence of decreasing entropy at constant baryonic mass. Some parameterizations lead to so-called \"twin-stars\", where two neutron stars have the same (gravitational) mass but different radii. Detecting them is regarded as a smoking gun signal for phase transition. We find, however, that proto-neutron star evolution suggests that gravitational twin stars are only possible if the hybrid star does not have, in addition, a baryonic twin. This rules out most twin star pairs, especially if the phase transition occurs at large densities. In a mass-radius diagram the unpopulated hybrid branch appears to be \"in the shadow\" of the hadronic branch.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.03148",
  "author_total": 4,
  "authors": [
    {
      "name": "Jannik Milthaler"
    },
    {
      "name": "Jan-Erik Christian"
    },
    {
      "name": "Pia Jakobus"
    },
    {
      "name": "Stephan Rosswog"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fvr004e2q86dp.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.03148",
  "fulltext_url": null,
  "id": "fvr004e2q86dp",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.03148",
  "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.HE"
    ],
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "openalex",
      "3103|Pulsars and Gravitational Waves Research"
    ]
  ],
  "openalex": "W7220366772",
  "pdf_url": "https://arxiv.org/pdf/2610.03148",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fvr004e2q86dp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:26:45Z",
      "native_id": "2610.03148",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.03148"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Twins in the Shadow: Phase Transitions in Proto-Neutron Stars",
  "title_text": "Twins in the Shadow: Phase Transitions in Proto-Neutron Stars",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:45Z",
  "url": "https://research.draconitic.com/paper/fvr004e2q86dp",
  "venue": "arXiv",
  "versions": []
}