Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-05-10T18:54:07.929308Z
Paper Citation Record · LEDGER
Untwisting the double copy: the zeroth copy as an optical seed
As of 5 August 2026, this Paper Citation Record lists 37 of 37 outbound references and 4 inbound Pith citation observations for arXiv:2604.05103.
A citation records a reference. It does not transfer a finding from one paper to another.
Coverage vector
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-05T06:32:48.257954+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-02T16:33:06.342787Z
A source-named dated measurement, never combined with another source.
Source: pith, observed 2026-07-04T14:39:57.621863Z
Reference resolution
37 of 37 outbound references displayed
- verified exact24
- verified fuzzy4
- unresolved8
- parse uncertain0
- malformed identifier0
- metadata mismatch1
External citation measurements
No source-named external measurement is stored.
Outbound references
Observation 21b44830-a4ae-46c6-882c-3ad8af64cddd · outbound
This paper cites an unresolved cited work.
Untwisting the double copy: the zeroth copy as an optical seed Unresolved cited work
Reference 1
- Resolution
- unresolved
- raw_fallback, observed 2026-05-16T13:07:55.278682Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation cb83eb33-7f84-4149-8dcb-7739c1d3249a · outbound
This paper cites Kawai, D.
Untwisting the double copy: the zeroth copy as an optical seed Kawai, D
Reference 2
- Resolution
- verified fuzzy
- raw_fallback, observed 2026-05-16T13:07:55.280979Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation a952770e-705a-47d2-871c-bf913ba67a9f · outbound
This paper cites New Relations for Gauge-Theory Amplitudes.
Untwisting the double copy: the zeroth copy as an optical seed New Relations for Gauge-Theory Amplitudes
Reference 3
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.860824Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation f7891f11-9552-4f18-8031-76ee65ea1ff5 · outbound
This paper cites Perturbative Quantum Gravity as a Double Copy of Gauge Theory.
Untwisting the double copy: the zeroth copy as an optical seed Perturbative Quantum Gravity as a Double Copy of Gauge Theory
Reference 4
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.808614Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 4f1ac9b0-88d6-4319-8b0a-e0cefdbb9cc2 · outbound
This paper cites The double copy: gravity from gluons.
Untwisting the double copy: the zeroth copy as an optical seed The double copy: gravity from gluons
Reference 5
- Resolution
- verified exact
- arxiv_id, observed 2026-07-04T22:47:14.938568Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation c26311a5-6c58-4c9a-8f6f-0edee0e0b1fd · outbound
This paper cites Black holes and the double copy.
Untwisting the double copy: the zeroth copy as an optical seed Black holes and the double copy
Reference 6
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.708006Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 11e99906-35f4-4850-8e95-b059ce9e8f51 · outbound
This paper cites The Kerr-Schild double copy in curved spacetime.
Untwisting the double copy: the zeroth copy as an optical seed The Kerr-Schild double copy in curved spacetime
Reference 7
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.665217Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 2c64d42e-e51b-438d-9f1f-01e344f0faf2 · outbound
This paper cites The classical double copy in three spacetime dimensions.
Untwisting the double copy: the zeroth copy as an optical seed The classical double copy in three spacetime dimensions
Reference 8
- Resolution
- metadata mismatch
- arxiv_id, observed 2026-05-10T23:45:50.795775Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 142f59f5-041b-46ff-949a-44725bd92959 · outbound
This paper cites Classical Double Copy: Kerr-Schild-Kundt metrics from Yang-Mills Theory.
Untwisting the double copy: the zeroth copy as an optical seed Classical Double Copy: Kerr-Schild-Kundt metrics from Yang-Mills Theory
Reference 9
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.801701Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 8fa32cdd-5c9f-47a8-924f-da188e0a2b68 · outbound
This paper cites Gravito-electromagnetism, Kerr-Schild and Weyl double copies; a unified perspective.
Untwisting the double copy: the zeroth copy as an optical seed Gravito-electromagnetism, Kerr-Schild and Weyl double copies; a unified perspective
Reference 10
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.747033Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 182b080d-1993-4f69-a076-6752fb0185e4 · outbound
This paper cites The Newman-Penrose Map and the Classical Double Copy.
Untwisting the double copy: the zeroth copy as an optical seed The Newman-Penrose Map and the Classical Double Copy
Reference 11
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.819290Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 4480febc-a43d-4f14-b427-5a3dc2979fd0 · outbound
This paper cites Twistor Space Origins of the Newman-Penrose Map.
Untwisting the double copy: the zeroth copy as an optical seed Twistor Space Origins of the Newman-Penrose Map
Reference 12
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.766975Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation bf48ebce-b446-4dde-b391-ca1ec7c97a17 · outbound
This paper cites Type D Spacetimes and the Weyl Double Copy.
Untwisting the double copy: the zeroth copy as an optical seed Type D Spacetimes and the Weyl Double Copy
Reference 13
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.844753Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation a589cbba-7ec5-463b-8ebd-d5069e4160f1 · outbound
This paper cites Isometries and the double copy.
Untwisting the double copy: the zeroth copy as an optical seed Isometries and the double copy
Reference 14
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.833169Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 30894230-f6ae-46a3-9640-c38316822e55 · outbound
This paper cites Weyl double copy in type D spacetime in four and five dimensions.
Untwisting the double copy: the zeroth copy as an optical seed Weyl double copy in type D spacetime in four and five dimensions
Reference 15
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.700534Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 2560c058-c821-40ae-8b2b-0b5de3133f41 · outbound
This paper cites The classical double copy of non-singular black holes.
Untwisting the double copy: the zeroth copy as an optical seed The classical double copy of non-singular black holes
Reference 16
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.775191Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 74073ba8-0ba2-454b-92e5-a7626dd6e5cb · outbound
This paper cites Sources in the Weyl double copy.
Untwisting the double copy: the zeroth copy as an optical seed Sources in the Weyl double copy
Reference 17
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.722418Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 04441f6a-4182-4e03-82d2-9dc327f7a10d · outbound
This paper cites Einstein-Maxwell theory and the Weyl double copy.
Untwisting the double copy: the zeroth copy as an optical seed Einstein-Maxwell theory and the Weyl double copy
Reference 18
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.715585Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 777e0f44-ff90-432a-8463-2bae4d032581 · outbound
This paper cites Deriving Weyl double copies with sources.
Untwisting the double copy: the zeroth copy as an optical seed Deriving Weyl double copies with sources
Reference 19
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.731142Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 5520c5fd-b49e-467e-8206-9ca8c7d82706 · outbound
This paper cites an unresolved cited work.
Untwisting the double copy: the zeroth copy as an optical seed Unresolved cited work
Reference 20
- Resolution
- unresolved
- raw_fallback, observed 2026-05-16T13:07:55.303117Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation dd2ee562-0213-42a3-a3c4-f34381fa7162 · outbound
This paper cites an unresolved cited work.
Untwisting the double copy: the zeroth copy as an optical seed Unresolved cited work
Reference 21
- Resolution
- unresolved
- raw_fallback, observed 2026-05-16T13:07:55.299097Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 22b56321-8052-43ca-ac95-ff8e4aece6c2 · outbound
This paper cites an unresolved cited work.
Untwisting the double copy: the zeroth copy as an optical seed Unresolved cited work
Reference 22
- Resolution
- unresolved
- raw_fallback, observed 2026-05-16T13:07:55.296986Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 82756ece-d66e-4328-bb02-66ce344aaed3 · outbound
This paper cites Penrose and W.
Untwisting the double copy: the zeroth copy as an optical seed Penrose and W
Reference 23
- Resolution
- verified fuzzy
- raw_fallback, observed 2026-05-16T13:07:55.290136Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 9cc2f30f-e5d3-4cbe-aa88-b52b71a67a48 · outbound
This paper cites Penrose and W.
Untwisting the double copy: the zeroth copy as an optical seed Penrose and W
Reference 24
- Resolution
- verified fuzzy
- raw_fallback, observed 2026-05-16T13:07:55.282961Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation ab7eb200-f75e-4d2e-978d-543ed449ba2e · outbound
This paper cites Cox, Kerr’s theorem and the kerr–schild congruences, J.
Untwisting the double copy: the zeroth copy as an optical seed Cox, Kerr’s theorem and the kerr–schild congruences, J
Reference 25
- Resolution
- verified exact
- doi, observed 2026-05-10T18:55:43.707489Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation a5c52e81-e15e-4f4a-8c73-0aae6b45fbec · outbound
This paper cites Cox and E.
Untwisting the double copy: the zeroth copy as an optical seed Cox and E
Reference 26
- Resolution
- verified fuzzy
- raw_fallback, observed 2026-05-16T13:07:55.285237Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 36772d05-8f95-4842-9f60-95a73f900bb0 · outbound
This paper cites A Twistorial Foundation for the Classical Double Copy.
Untwisting the double copy: the zeroth copy as an optical seed A Twistorial Foundation for the Classical Double Copy
Reference 27
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.853244Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation c39d208f-3842-4665-871b-b88e00552527 · outbound
This paper cites The Weyl double copy from twistor space.
Untwisting the double copy: the zeroth copy as an optical seed The Weyl double copy from twistor space
Reference 28
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.784159Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation f96c901d-6207-4cbb-a2c5-4a4fb9b6901d · outbound
This paper cites Alternative formulations of the twistor double copy.
Untwisting the double copy: the zeroth copy as an optical seed Alternative formulations of the twistor double copy
Reference 29
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.656589Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 53ba81b7-9021-46e5-8fe0-ae2f49c6d0ca · outbound
This paper cites The Penrose Transform and the Kerr-Schild double copy.
Untwisting the double copy: the zeroth copy as an optical seed The Penrose Transform and the Kerr-Schild double copy
Reference 30
- Resolution
- verified exact
- local_arxiv, observed 2026-05-10T23:45:50.813889Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 03a9c3cb-2f5b-490a-a0f2-d3a875a6c380 · outbound
This paper cites an unresolved cited work.
Untwisting the double copy: the zeroth copy as an optical seed Unresolved cited work
Reference 31
- Resolution
- unresolved
- raw_fallback, observed 2026-05-16T13:07:55.287692Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation da69da67-33a0-42a3-9b71-4a6cf4d6813e · outbound
This paper cites The Kerr-Schild ansatz revised.
Untwisting the double copy: the zeroth copy as an optical seed The Kerr-Schild ansatz revised
Reference 32
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.789287Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 6f068e2f-c4c0-4b8e-b9b8-f749a1879274 · outbound
This paper cites an unresolved cited work.
Untwisting the double copy: the zeroth copy as an optical seed Unresolved cited work
Reference 33
- Resolution
- unresolved
- raw_fallback, observed 2026-05-16T13:07:55.301094Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation a86c3823-79c7-4816-94e0-541ff4dd5453 · outbound
This paper cites Kerr-Schild Double Copy and Complex Worldlines.
Untwisting the double copy: the zeroth copy as an optical seed Kerr-Schild Double Copy and Complex Worldlines
Reference 34
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.752400Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 11f4879e-eeb2-4802-8d5a-53f8ece3dae9 · outbound
This paper cites an unresolved cited work.
Untwisting the double copy: the zeroth copy as an optical seed Unresolved cited work
Reference 35
- Resolution
- unresolved
- raw_fallback, observed 2026-05-16T13:07:55.292482Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 09354da6-36ec-47f3-b7ad-8d79eaa91ca2 · outbound
This paper cites The Kerr-Newman metric: A Review.
Untwisting the double copy: the zeroth copy as an optical seed The Kerr-Newman metric: A Review
Reference 36
- Resolution
- verified exact
- arxiv_id, observed 2026-05-10T23:45:50.761751Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 2a3fbaee-38d6-44c8-a69d-1297f253cb3c · outbound
This paper cites an unresolved cited work.
Untwisting the double copy: the zeroth copy as an optical seed Unresolved cited work
Reference 37
- Resolution
- unresolved
- raw_fallback, observed 2026-05-16T13:07:55.294768Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Pith citing papers
Observation be797a24-2fd0-4387-8f33-f37d5ffe8ac7 · inbound
Birkhoff rigidity from a covariant optical seed cites this paper.
Birkhoff rigidity from a covariant optical seed Untwisting the double copy: the zeroth copy as an optical seed
Reference 15
- Resolution
- verified exact
- local_arxiv, observed 2026-05-11T08:25:58.813215Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation a8fee23f-a13c-4b10-aba3-b11d0dca3966 · inbound
Birkhoff rigidity from a covariant optical seed cites this paper.
Birkhoff rigidity from a covariant optical seed Untwisting the double copy: the zeroth copy as an optical seed
Reference 15
- Resolution
- unresolved
- no resolver link, observed 2026-08-02T16:33:06.342787Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 4eb4071a-25cb-43d9-8cc2-134ce050af0b · inbound
Non-topological solitons in biadjoint scalar field theory cites this paper.
Non-topological solitons in biadjoint scalar field theory Untwisting the double copy: the zeroth copy as an optical seed
Reference 63
- Resolution
- verified exact
- local_arxiv, observed 2026-07-04T14:39:57.623568Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-05T06:32:48.257954+00:00.
Observation 1dc7eb6c-4c3e-4e6f-96d8-99261301c1a1 · inbound
Mass/electric versus NUT/magnetic charges: duality from scattering amplitudes in $D\geq4$ and for all bosonic spins cites this paper.
Mass/electric versus NUT/magnetic charges: duality from scattering amplitudes in $D\geq4$ and for all bosonic spins Untwisting the double copy: the zeroth copy as an optical seed
Reference 85
- Resolution
- unresolved
- no resolver link, observed 2026-08-01T04:15:51.830983Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.