{
  "abstract": "We present a unifying description of dynamical phase transitions in the unitary evolution of an isolated quantum particle and the dissipative relaxation of a classical Brownian particle, based on a dynamical generat- ing function. In the semiclassical and weak-noise limits, Fisher zeros of this function condense in the complex- time plane and reach the corresponding physical axes, producing dynamical phase transitions through a competition between return trajectories. This establishes a direct connection between quantum and classical (finite-time) dynamical phase transitions, where the semiclassical limit plays the role of the thermodynamic limit. In particular, the established link naturally provides a classical version of the Loschmidt amplitude and shows how dynamical quantum phase transitions, typically associated with isolated many-body systems, can arise in a single-particle quantum system. The dynamical phases are distinguished by a unifying, trajectory- based order parameter, realized as a classical correlation function and a sequential quantum weak value.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.01197",
  "author_total": 4,
  "authors": [
    {
      "name": "Norayr Asriyan"
    },
    {
      "name": "Jan Meibohm"
    },
    {
      "name": "Vasco Cavina"
    },
    {
      "name": "Massimiliano Esposito"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bpst6fzxca483.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.01197",
  "fulltext_url": null,
  "id": "bpst6fzxca483",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.01197",
  "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",
      "cond-mat.stat-mech"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Quantum many-body systems"
    ]
  ],
  "openalex": "W7206213857",
  "pdf_url": "https://arxiv.org/pdf/2609.01197",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bpst6fzxca483.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "2609.01197",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.01197"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.stat-mech",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Dynamical phase transitions for single particles in the semiclassical and weak noise limits",
  "title_text": "Dynamical phase transitions for single particles in the semiclassical and weak noise limits",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/bpst6fzxca483",
  "venue": "arXiv",
  "versions": []
}