{
  "abstract": "We study a symmetry-restoration quantum Mpemba effect in the dissipative Dicke model as an example of a weakly $\\mathbb Z_2$-symmetric open quantum system, where the full Liouvillian is parity covariant although individual quantum jumps connect the two Hilbert-space parity sectors. Using the entanglement-asymmetry (EA) diagnostic to monitor parity restoration, we compare coherent-product and cat-product initial states. Coherent-product states show conventional relaxation, with larger initial asymmetry decaying more slowly and no Mpemba crossing observed. Cat-product states, by contrast, can reverse this hierarchy over a finite region of initial-state space. This reversal is enabled by initial-state mode filtering: the cat-product superposition suppresses the contributions of the leading slow Liouvillian modes, allowing a more asymmetric state to restore parity through faster decay channels. Our results reveal that symmetry-restoration QME can arise even when parity is preserved only as a weak Liouvillian symmetry, with quantum jumps mixing the Hilbert-space parity sectors. The anomalous relaxation is governed by initial-state-dependent filtering of the leading slow Liouvillian modes, providing a mechanism for symmetry-restoration QME beyond strongly conserved symmetry sectors.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.00902",
  "author_total": 6,
  "authors": [
    {
      "name": "Dongni Chen"
    },
    {
      "name": "Wei Xiong"
    },
    {
      "name": "Peng-Cheng Li"
    },
    {
      "name": "Yee Sin Ang"
    },
    {
      "name": "Ching Hua Lee"
    },
    {
      "name": "Yi Qin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/87wddkpgpddwy.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.00902",
  "fulltext_url": null,
  "id": "87wddkpgpddwy",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.00902",
  "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",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.00902",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/87wddkpgpddwy.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.00902",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.00902"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Quantum Mpemba effect of Z2 symmetry restoration in the Dicke model",
  "title_text": "Quantum Mpemba effect of Z2 symmetry restoration in the Dicke model",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/87wddkpgpddwy",
  "venue": "arXiv",
  "versions": []
}