{
  "abstract": "A bstract : We propose a hybrid inflation model where a pseudo-Nambu-Goldstone boson inflaton couples to N waterfall scalar fields respecting a Z N symmetry. We identify the phases for the inflation and the consequent waterfall transition, concretely, in Z ₂ , Z ₃ and Z ₄ cases. From the Coleman-Weinberg potential for the inflaton, we show that the quadratically divergent corrections coming from the waterfall sector are cancelled due to the Z N symmetry, while the logarithmically divergent corrections are absent only for N > 2, ensuring the radiative stability of the inflaton potential. We show the parameter space for a successful inflation with the loop-corrected inflaton potential in each model and compare the results between different discrete symmetries. We further analyze the vacuum structure of the models and the reheating process due to the Z N -invariant Higgs-portal couplings for the waterfall fields. We find that the maximum temperature can be smaller than the mass of the waterfall field condensate such that the Z N symmetry is not restored after reheating and there is no domain wall problem in the models. We also comment on the possibility of multi-component dark matter from the Z N partners of the waterfall field condensate.",
  "abstract_shown": true,
  "affiliations": [
    "Chung-Ang University",
    "Deutsches Elektronen-Synchrotron DESY"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Hyun Min Lee",
      "orcid": "0000-0001-8009-0349"
    },
    {
      "affs": [
        1
      ],
      "name": "Adriana G. Menkara",
      "orcid": "0000-0001-7974-1909"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6xb32yhpxd5ew.bib",
  "cited_by": 0,
  "doi": "10.1007/jhep10(2026)222",
  "fulltext_url": "https://doi.org/10.1007/JHEP10(2026)222",
  "id": "6xb32yhpxd5ew",
  "issns": [
    "1029-8479"
  ],
  "landing_url": "https://link.springer.com/article/10.1007/JHEP10(2026)222",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "QC770-798"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7162079028",
  "pdf_url": "https://link.springer.com/content/pdf/10.1007/JHEP10(2026)222.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/6xb32yhpxd5ew.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "10.1007/jhep10(2026)222",
      "source": "crossref",
      "url": "https://link.springer.com/article/10.1007/JHEP10(2026)222"
    },
    {
      "first_seen": "2026-10-30T13:45:39Z",
      "native_id": "e7a79aba5821417d86939f4ae9242ddb",
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      "url": "https://doi.org/10.1007/jhep10(2026)222"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Cosmology and Gravitation Theories",
      "subfield": "cosmology"
    }
  ],
  "title": "Pseudo-Nambu-Goldstone inflation with ZN symmetric waterfall fields",
  "title_text": "Pseudo-Nambu-Goldstone inflation with ZN symmetric waterfall fields",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:45:39Z",
  "url": "https://research.draconitic.com/paper/6xb32yhpxd5ew",
  "venue": "Journal of High Energy Physics",
  "versions": []
}