{
  "abstract": "We explore a nonequilibrium Bose-Einstein condensate (BEC) in a bosonic Kitaev chain. Within a mean-field framework, we show that bosonic superfluid order develops once the pairing strength exceeds a critical threshold. The condensate order parameter adopts an alternating phase between even and odd sites, giving rise to a spontaneous sublattice ordering. By mapping the emergent sublattice degrees of freedom onto a pseudospin, the elementary Bogoliubov excitation is described by a non-Hermitian Dirac Hamiltonian, displaying two prominent features: a re-entrant bosonic Andreev bound state localized around boundaries, and a macroscopic degeneracy of exceptional Majorana bosons at the critical point.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.29082",
  "author_total": 2,
  "authors": [
    {
      "name": "Kazuki Yamamoto"
    },
    {
      "name": "Youichi Yanase"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4wxk1shkceyh7.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.29082",
  "fulltext_url": null,
  "id": "4wxk1shkceyh7",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.29082",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.quant-gas"
    ],
    [
      "openalex",
      "3107|Quantum Mechanics and Non-Hermitian Physics"
    ]
  ],
  "openalex": "W7214314074",
  "pdf_url": "https://arxiv.org/pdf/2609.29082",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-24",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4wxk1shkceyh7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:11Z",
      "native_id": "2609.29082",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.29082"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.quant-gas",
      "subfield": "amo"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Nonequilibrium Dirac condensate in bosonic Kitaev chain",
  "title_text": "Nonequilibrium Dirac condensate in bosonic Kitaev chain",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:11Z",
  "url": "https://research.draconitic.com/paper/4wxk1shkceyh7",
  "venue": "arXiv",
  "versions": []
}