{
  "abstract": "Adaptive measurements test whether a retrocausal model preserves observable records when experiments are connected by classical feedback. We establish exact and quantitative composition constraints for a finite-width, coplanar Schulman-type source with positive wrapped-Cauchy propagation weights. Raw segment composition admits an explicit adaptive signalling witness. A uniquely determined scalar correction preserves recorded continuations, and a detector with preparation memory implements this correction while retaining the source correlations. For common, independently prepared terminal detectors coupled to the source through arrival angles, exact calibration forces equal-mass antipodal atomic responses. Under setting-only raw feedback, the sharp minimum worst disturbance of an earlier record is $ε_\\star(0)=[2\\cosh(2Γ)]^{-1}$, where $Γ$ is the total source-path width. We derive explicit finite-error bounds and prove linear small-error improvement. For four settings at $Γ=0.4$, a uniform reduction over arbitrary nonnegative response measures and a continuous polynomial certificate establish $ε_\\star(δ)=ε_\\star(0)-C_{0.4}δ+O(δ^2)$, with $C_{0.4}\\simeq9.351091771057010$. A positive five-atom detector attains this coefficient. The results quantify the compatibility of isolated-source accuracy and adaptive record preservation, and provide precise design conditions for retrocausal apparatus models with explicit preparation, memory, and control.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.17607",
  "author_total": 1,
  "authors": [
    {
      "name": "D. M. Theshan N. Weerasinghe"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8p41q8rxc64z6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.17607",
  "fulltext_url": null,
  "id": "8p41q8rxc64z6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.17607",
  "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",
      "3107|Quantum Mechanics and Applications"
    ]
  ],
  "openalex": "W7213563757",
  "pdf_url": "https://arxiv.org/pdf/2609.17607",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-19",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8p41q8rxc64z6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.17607",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.17607"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Adaptive Record Consistency in a Schulman-Type Model",
  "title_text": "Adaptive Record Consistency in a Schulman-Type Model",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/8p41q8rxc64z6",
  "venue": "arXiv",
  "versions": []
}