{
  "abstract": "We show that the vacuum metamorphosis model with decay fits current baryon acoustic oscillation and supernova distance data and cosmic microwave background measurements significantly better than $Λ$CDM and nearly as well as $w_0w_a$CDM with the same number of parameters. Vacuum metamorphosis with decay provides a physically motivated model of dark energy and an explanation of current cosmological data. In this scenario, non-perturbative quantum effects of a massive scalar field freeze the Ricci scalar curvature when it reaches a critical value proportional to the mass squared, inducing a phase transition in the scalar field, giving a phantom dark energy equation of state $w<-1$. After the phase transition, vacuum energy decays into light particles, providing a natural mechanism for the dark-energy equation of state to cross the phantom divide from $w<-1$ to $w>-1$, in agreement with current cosmological indications, without requiring an explicit coupling to matter.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.41077",
  "author_total": 5,
  "authors": [
    {
      "name": "William Giarè"
    },
    {
      "name": "Kushal Lodha"
    },
    {
      "name": "Robert R. Caldwell"
    },
    {
      "name": "Eleonora Di Valentino"
    },
    {
      "name": "Eric V. Linder"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1c8wednvp4qqg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.41077",
  "fulltext_url": null,
  "id": "1c8wednvp4qqg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.41077",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.41077",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1c8wednvp4qqg.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:21:15Z",
      "native_id": "2610.41077",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.41077"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    }
  ],
  "title": "Vacuum Phase Transition and Decay to Cross the Phantom Divide",
  "title_text": "Vacuum Phase Transition and Decay to Cross the Phantom Divide",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:51Z",
  "url": "https://research.draconitic.com/paper/1c8wednvp4qqg",
  "venue": "arXiv",
  "versions": []
}