{
  "abstract": "We investigate a cavity--atom system beyond the rotating-wave approximation and recast its dynamics as an effective tight-binding problem in the excitation-number basis. The same experimentally relevant light--matter platform exhibits two distinct regimes controlled by the photon number. In the large-photon-number regime, the hopping amplitudes become nearly uniform and the effective lattice reduces to a dimerized SSH-type chain subject to a linear energy gradient. The spectrum then organizes into one or two Wannier--Stark ladders, giving rise to controllable Bloch and Bloch--Zener oscillations and quantitatively explaining the observed revival patterns. In the small-photon-number regime, the intrinsic $\\sqrt{\\bar n+(\\cdots)}$ dependence produces a pronounced hopping deformation, namely dimerized couplings that increase along the excitation-number lattice. This deformation reshapes the density of states, enhances collective localization, and generates an energy-resolved spatial bias of the eigenstates. The corresponding real-time dynamics displays direction-dependent anomalous diffusion together with Bloch-like revivals and beat phenomena in selected parameter windows. Our results show that the same cavity--atom platform can realize both emergent ladder spectra and hopping-induced localization in excitation-number space.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.11897",
  "author_total": 4,
  "authors": [
    {
      "name": "H. Shen"
    },
    {
      "name": "J. Cao"
    },
    {
      "name": "R. Wang"
    },
    {
      "name": "X. Z. Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3q54kx77y7atq.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.11897",
  "fulltext_url": null,
  "id": "3q54kx77y7atq",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.11897",
  "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",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Strong Light-Matter Interactions"
    ]
  ],
  "openalex": "W7221189476",
  "pdf_url": "https://arxiv.org/pdf/2610.11897",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3q54kx77y7atq.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.11897",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.11897"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Emergent SSH physics and localization in a cavity--atom system beyond the rotating-wave approximation",
  "title_text": "Emergent SSH physics and localization in a cavity--atom system beyond the rotating-wave approximation",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:17Z",
  "url": "https://research.draconitic.com/paper/3q54kx77y7atq",
  "venue": "arXiv",
  "versions": []
}