{
  "abstract": "Dynamical quantum phase transitions (DQPT) provide a fundamental framework for characterizing nonequilibrium critical phenomena, and have recently been extended to non-Hermitian systems. Half-integer jumps of the dynamical topological order parameter can arise in both Hermitian and non-Hermitian systems, yet their origin in non-Hermitian settings remains unclear. Here, we investigate DQPTs in a two-band non-Hermitian model and show that these fractional jumps originate from the discontinuity in the complex energy spectrum. We demonstrate that this behavior is intrinsically linked to the steady-state phase diagram of the quench Hamiltonian, and also classify the occurrence of DQPT. We further extend our analysis to the multiband Hamiltonian and the two-dimensional model, providing a unified understanding of fractional dynamical topological signatures.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.05262",
  "author_total": 4,
  "authors": [
    {
      "name": "Zimiao Zhang"
    },
    {
      "name": "Li Chen"
    },
    {
      "name": "Weilun Jiang"
    },
    {
      "name": "Heng Shen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2jrjzntntw5ge.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.05262",
  "fulltext_url": null,
  "id": "2jrjzntntw5ge",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.05262",
  "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|Quantum Mechanics and Non-Hermitian Physics"
    ]
  ],
  "openalex": "W7220684160",
  "pdf_url": "https://arxiv.org/pdf/2610.05262",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2jrjzntntw5ge.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.05262",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.05262"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Origin and classification of fractional dynamical topology in non-Hermitian quantum systems",
  "title_text": "Origin and classification of fractional dynamical topology in non-Hermitian quantum systems",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/2jrjzntntw5ge",
  "venue": "arXiv",
  "versions": []
}