{
  "abstract": "We discuss the quench dynamics of an isolated system composed of a single spinful impurity in the transverse Rabi field and bath of non-interacting three- and two-dimensional bosons. Specifically, we consider the evolution of bosons and a spin-$\\frac{1}{2}$ particle, initially prepared in a Bose-Einstein condensate state and a magnetic ground state, respectively, with the spin-dependent contact boson-impurity interaction switched on. Applying an original mean-field-like approximation, which naturally reflects the statistical effects of the bosonic bath, we calculate time-dependent components of the average impurity spin and the overlap of the wave function between initial and arbitrary time moments. A key prediction is a substantial speed-up in the decoherence (thermalization) dynamics of the spin degree of freedom compared to results obtained with the Chevy-like ansatz.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.28180",
  "author_total": 2,
  "authors": [
    {
      "name": "O. Hryhorchak"
    },
    {
      "name": "V. Pastukhov"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9p1q253btg04r.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.28180",
  "fulltext_url": null,
  "id": "9p1q253btg04r",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.28180",
  "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.quant-gas"
    ],
    [
      "openalex",
      "3107|Cold Atom Physics and Bose-Einstein Condensates"
    ]
  ],
  "openalex": "W7214227898",
  "pdf_url": "https://arxiv.org/pdf/2609.28180",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9p1q253btg04r.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:56Z",
      "native_id": "2609.28180",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.28180"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.quant-gas",
      "subfield": "amo"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.quant-gas",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Quantum dynamics of spinful impurity in ideal Bose gas",
  "title_text": "Quantum dynamics of spinful impurity in ideal Bose gas",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:56Z",
  "url": "https://research.draconitic.com/paper/9p1q253btg04r",
  "venue": "arXiv",
  "versions": []
}