{
  "abstract": "We address the axion quality/cosmology tension that often plagues QCD axion models in post-inflationary Peccei-Quinn (PQ) breaking scenarios. In the proposed framework, the PQ symmetry emerges accidentally from an ${\\rm SU}(\\mathcal{N})_L\\times{\\rm SU}(\\mathcal{N})_R$ gauge symmetry spontaneously broken to ${\\rm SU}(\\mathcal{N})_{L+R}$, and its quality is protected because PQ breaking first appears at operator dimension $\\mathcal{N}$. Moreover, the construction avoids the domain-wall problem, ensures that no stable fractionally charged relic survives ${\\rm SU} (\\mathcal{N})_{L+R}$ confinement, and remains free of Landau poles below the scale of PQ-breaking operators. The exotic quarks required to generate the PQ anomaly hadronize into unstable mesons and cosmologically stable neutral baryons. However, plausible arguments indicating a strong suppression of baryon formation in ${\\rm SU}(\\mathcal{N})$ gauge theories at large $\\mathcal{N}$, suggest that their contribution to the dark matter energy density remains subdominant. Combining cosmological constraints with PQ quality and perturbativity requirements yields a viable parameter space in which the axion makes up most of the dark matter and its mass remains predictable.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.16110",
  "author_total": 4,
  "authors": [
    {
      "name": "Luca Di Luzio"
    },
    {
      "name": "Samuele Di Valeriano"
    },
    {
      "name": "Marco Nardecchia"
    },
    {
      "name": "Enrico Nardi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3wwrfw7ve0vpa.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.16110",
  "fulltext_url": null,
  "id": "3wwrfw7ve0vpa",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.16110",
  "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",
      "hep-ph"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3106|Dark Matter and Cosmic Phenomena"
    ]
  ],
  "openalex": "W7213439914",
  "pdf_url": "https://arxiv.org/pdf/2609.16110",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3wwrfw7ve0vpa.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:41Z",
      "native_id": "2609.16110",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.16110"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Reconciling axion quality with post-inflation cosmology",
  "title_text": "Reconciling axion quality with post-inflation cosmology",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:41Z",
  "url": "https://research.draconitic.com/paper/3wwrfw7ve0vpa",
  "venue": "arXiv",
  "versions": []
}