{
  "abstract": "Causal loops escape paradoxes if they generate valid probabilities under arbitrary independent local interventions. We show that a deterministic classical process is logically consistent if and only if it contains no signaling loops: cyclic signaling is forbidden but cyclic causation is not, allowing indefinite causal order. Logical consistency is then found to hold exactly when the list of events of a process is pairwise exclusive and complete, providing the first event-based, intervention-free, non-recursive characterization of consistent causal loops. Our results repair a previously introduced intervention-free criterion that misses global loops and reveal that what makes deterministic classical communications without causal order consistent is a multipartite form of Specker's principle: if any two of several questions can be answered jointly, so can all of them.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.39735",
  "author_total": 6,
  "authors": [
    {
      "name": "Hippolyte Dourdent"
    },
    {
      "name": "Andreas Leitherer"
    },
    {
      "name": "Emanuel-Cristian Boghiu"
    },
    {
      "name": "Kyrylo Simonov"
    },
    {
      "name": "Ravi Kunjwal"
    },
    {
      "name": "Antonio Acín"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9tnrhzg6stt5w.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.39735",
  "fulltext_url": null,
  "id": "9tnrhzg6stt5w",
  "issns": [],
  "landing_url": "https://hal.science/hal-05791416v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.qphy"
    ],
    [
      "openalex",
      "3107|Quantum Mechanics and Applications"
    ]
  ],
  "openalex": "W7216595924",
  "pdf_url": "https://hal.science/hal-05791416/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9tnrhzg6stt5w.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:53Z",
      "native_id": "hal-05791416",
      "source": "hal",
      "url": "https://hal.science/hal-05791416v1"
    },
    {
      "first_seen": "2026-10-30T12:25:49Z",
      "native_id": "2609.39735",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.39735"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "What makes a causal loop consistent?",
  "title_text": "What makes a causal loop consistent?",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:49Z",
  "url": "https://research.draconitic.com/paper/9tnrhzg6stt5w",
  "venue": "HAL",
  "versions": []
}