{
  "abstract": "We have presented an analytical and numerical study of efficiency fluctuations in quantum Carnot and Otto engines with pistons operating under non-quasi-static adiabatic expansion and compression processes at constant speed, along with quasi-static isothermal (for the Carnot engine) or isochoric processes (for the Otto engine). We have considered the two-point measurement scheme during the adiabatic strokes in this regard. By considering each of the pistons as a single quantum particle in a 1-D box with a non-quasi-statically movable boundary, we capture the stochastic nature of the work output resulting from the unitary evolution of the quantum mechanical state of the system during non-equilibrium processes. Furthermore, we have explicitly shown how the piston speed during quantum non-equilibrium strokes introduces additional quantum fluctuations that modify the average efficiency of both the engines.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10647",
  "author_total": 2,
  "authors": [
    {
      "name": "Bikram Keshari Behera"
    },
    {
      "name": "Shyamal Biswas"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/byj4nm8b95pfh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10647",
  "fulltext_url": null,
  "id": "byj4nm8b95pfh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.10647",
  "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.quant-gas"
    ],
    [
      "arxiv",
      "cond-mat.stat-mech"
    ],
    [
      "openalex",
      "3109|Advanced Thermodynamics and Statistical Mechanics"
    ]
  ],
  "openalex": "W7221087846",
  "pdf_url": "https://arxiv.org/pdf/2610.10647",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/byj4nm8b95pfh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.10647",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10647"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.quant-gas",
      "subfield": "amo"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.quant-gas",
      "subfield": "condensed-matter"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.stat-mech",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Efficiency fluctuations in quantum heat engines with non-quasi-static adiabatic strokes",
  "title_text": "Efficiency fluctuations in quantum heat engines with non-quasi-static adiabatic strokes",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/byj4nm8b95pfh",
  "venue": "arXiv",
  "versions": []
}