Pith Number

pith:JSS5AJHV

pith:2026:JSS5AJHVHVP35H4FM7XGXB3IUT

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Are free choices absolute, when internalized in Wigner's friend?

Laurens Walleghem

Free choices are not absolute when internalized in an extended Wigner's friend scenario under locality.

arxiv:2605.14538 v1 · 2026-05-14 · quant-ph

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\usepackage{pith}
\pithnumber{JSS5AJHVHVP35H4FM7XGXB3IUT}

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4 Citations open

5 Replications open

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

we present an argument against the absoluteness of free choices under the same notion of locality, using an extended Wigner's friend scenario based on the Pusey--Barrett--Rudolph theorem.

C2weakest assumption

The locality notion employed in prior extended Wigner's friend arguments transfers directly to the internal observer's measurement choice without requiring additional assumptions about how free choices are modeled inside the unitary evolution.

C3one line summary

Free choices lack absoluteness in an extended Wigner's friend scenario based on the Pusey-Barrett-Rudolph theorem under locality.

References

56 extracted · 56 resolved · 3 Pith anchors

[1] tracking assumption

[2] Maudlin, Three measurement problems, Topoi14, 7 (1995) 1995

[3] Pitowsky, Quantum mechanics as a theory of probability, inFestschrift in Honor of Jeffrey Bub, Western Ontario Series in Philosophy of Science, edited by W 2007

[4] J. Bub and I. Pitowsky, Two dogmas about quantum mechanics, inMany Worlds? Everett, Quantum Theory, and Reality, edited by S. Saunders, J. Barrett, A. Kent, and D. Wallace (Oxford University Press, 20 2010

[5] Brukner, On the quantum measurement problem, Quantum [Un] Speakables II: Half a Century of Bell’s Theorem , 95 (2017) 2017

Formal links

1 machine-checked theorem link

Receipt and verification

First computed	2026-05-17T23:39:05.859888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ca5d024f53d5fbe9f8567ee6b8768a4f609dcb0652afaf77cc723bf7001f5f2

Aliases

arxiv: 2605.14538 · arxiv_version: 2605.14538v1 · doi: 10.48550/arxiv.2605.14538 · pith_short_12: JSS5AJHVHVP3 · pith_short_16: JSS5AJHVHVP35H4F · pith_short_8: JSS5AJHV

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/JSS5AJHVHVP35H4FM7XGXB3IUT \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 4ca5d024f53d5fbe9f8567ee6b8768a4f609dcb0652afaf77cc723bf7001f5f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2e76f27cee85d736e866833e5868b9252d8680843b3abbe1d8a12d210fcb617",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-05-14T08:21:35Z",
    "title_canon_sha256": "967d95281dbe69b2f83006f41545d2d3fb66ccb1cc43c80942240183d1f8ffb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.14538",
    "kind": "arxiv",
    "version": 1
  }
}