Paper Citation Record · LEDGER

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations

As of 18 August 2026, this Paper Citation Record lists 37 of 37 outbound references and 1 inbound Pith citation observation for arXiv:2506.21400.

A citation records a reference. It does not transfer a finding from one paper to another.

pith.paper-citation-record.v1
2506.21400 v1

Coverage vector

measured 37 of 37 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-06T22:36:13.482191Z

measured 38 of 38 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-18T06:34:40.430872+00:00

measured 1 of 1 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-06-28T14:03:25.700272Z

measured 0 of 1 external citation measurements

A source-named dated measurement, never combined with another source.

Source: arxiv_reference, observed 2026-07-01T23:46:23.461809Z

Reference resolution

37 of 37 outbound references displayed

verified exact1
verified fuzzy18
unresolved18
parse uncertain0
malformed identifier0
metadata mismatch0

External citation measurements

No source-named external measurement is stored.

Outbound references

Observation 549a1b6c-72d2-4104-bb7d-07193ce7031c · outbound

This paper cites Pais and G.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Pais and G

Reference 1

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:18.448742Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation cdf9c2b1-69d4-44c1-8216-27f340b124e7 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 2

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:18.284315Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 0f3aa39e-5721-49c3-b2d3-1c20f921f5c1 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 3

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:18.148768Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation c2d63f58-4b81-401f-901e-447891b3b369 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 4

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:18.010413Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 42f261de-e280-4ccf-901b-7a571aca9e11 · outbound

This paper cites Spontaneous generation of the Newton constant in the renormalizable gravity theory.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Spontaneous generation of the Newton constant in the renormalizable gravity theory

Reference 5

Resolution: unresolved; no resolver link, observed 2026-08-06T22:36:11.481455Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 3795b8a6-aef3-4d28-b11a-f66039d96162 · outbound

This paper cites Modesto and I.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Modesto and I

Reference 6

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:17.857556Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 47e97018-93fa-4c76-906f-637c1c530188 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 7

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:17.718940Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation fc202f49-c761-4672-9dcf-6cc43cbeeba4 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 8

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:17.533847Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 543001ae-6c6c-491f-8cb6-9948085b7031 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 9

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:17.402126Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 7bc6f4d2-cd8b-41fe-8b94-0492de86f228 · outbound

This paper cites Fring, T.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Fring, T

Reference 10

Resolution: unresolved; no resolver link, observed 2026-08-06T22:36:11.747636Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 9e98b4d5-ed57-4be2-a9f1-a5dc7bb011a2 · outbound

This paper cites Fring, T.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Fring, T

Reference 11

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:17.226846Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 8a4a66d4-235d-45db-b556-f6458ed10472 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 12

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:17.038560Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 046cada1-a2ab-4709-8592-b328929f0a2c · outbound

This paper cites Salvio and A.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Salvio and A

Reference 13

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:16.871790Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 5bfbffae-40ca-4561-b413-9d6d6481308b · outbound

This paper cites Anselmi, Fakeons and Lee-Wick models, JHEP 2018(2) (2018).

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Anselmi, Fakeons and Lee-Wick models, JHEP 2018(2) (2018)

Reference 14

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:16.686718Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 9c29ff3f-babb-417c-9ce8-c7c66cfce968 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 15

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:16.533532Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation ee291df4-f84f-44f5-a43f-7048be318580 · outbound

This paper cites Raidal and H.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Raidal and H

Reference 16

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:16.384144Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 2f6c3cc1-1c72-4369-8fd6-076011e5e35e · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 17

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:16.290698Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 13adc657-40e1-4cf9-b445-8fc45ff88eeb · outbound

This paper cites Smilga, Benign ghosts in higher-derivative systems, in J.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Smilga, Benign ghosts in higher-derivative systems, in J

Reference 18

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:16.151104Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 62a4a3c9-50b3-4a81-9ad5-d11d169b959b · outbound

This paper cites Deffayet, S.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Deffayet, S

Reference 19

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:15.993676Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 8ffa6708-f7ca-4365-bb3c-d602858ddbb9 · outbound

This paper cites Deffayet, A.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Deffayet, A

Reference 20

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:15.856753Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation b4c0c958-279e-4e00-82de-3cb032849fe0 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 21

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:15.706947Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation b2bd0e93-d837-4a13-9424-78cf63f5e827 · outbound

This paper cites Bolonek and P.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Bolonek and P

Reference 22

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:15.576669Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation f0969e10-35cd-4eac-9cba-e0a2d1215ad4 · outbound

This paper cites Damaskinsky and M.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Damaskinsky and M

Reference 23

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:15.440282Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 23aeaf0c-7e5f-47f3-a355-fb14f3f68358 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 24

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:15.325100Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation f51bf306-273d-437c-8e34-42520f1b2616 · outbound

This paper cites Mostafazadeh, A Hamiltonian formulation of the Pais–Uhlenbeck oscillator that yields a stable and unitary quantum system, Phys.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Mostafazadeh, A Hamiltonian formulation of the Pais–Uhlenbeck oscillator that yields a stable and unitary quantum system, Phys

Reference 25

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:15.188574Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation a77dc22c-a939-4b9b-bb8f-17be6caeba57 · outbound

This paper cites Andrzejewski, Hamiltonian formalisms and symmetries of the Pais–Uhlenbeck oscillator, Nucl.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Andrzejewski, Hamiltonian formalisms and symmetries of the Pais–Uhlenbeck oscillator, Nucl

Reference 26

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:15.063908Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation b0c7fd48-2083-4374-b818-4a05f93e9be2 · outbound

This paper cites Andrzejewski, Conformal Newton–Hooke algebras, Niederer’s transformation and Pais–Uhlenbeck oscillator, Phys.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Andrzejewski, Conformal Newton–Hooke algebras, Niederer’s transformation and Pais–Uhlenbeck oscillator, Phys

Reference 27

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:14.916146Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 1ab756a9-486a-4f87-87a6-46fbd8e483fd · outbound

This paper cites Andrzejewski, A.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Andrzejewski, A

Reference 28

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:14.813048Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 134831cc-58d2-4416-ae82-7a953f008fef · outbound

This paper cites Elbistan and K.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Elbistan and K

Reference 29

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:14.684742Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation ca16f11d-7e61-4131-968f-e2aa9036bd7f · outbound

This paper cites Lie symmetries and ghost-free representations of the Pais-Uhlenbeck model.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Lie symmetries and ghost-free representations of the Pais-Uhlenbeck model

Reference 30

Resolution: verified exact; local_arxiv, observed 2026-08-06T22:36:13.628524Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 571f604f-ee63-4929-9bf6-261f5706de66 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 31

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:14.544297Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation c473b231-a106-4038-90f5-f694e9770698 · outbound

This paper cites Mostafazadeh, Pseudo-Hermitian Representation of Quantum Mechanics, Int.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Mostafazadeh, Pseudo-Hermitian Representation of Quantum Mechanics, Int

Reference 32

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:14.418475Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation d638bea5-b050-4eb5-a29a-0d8728310fdb · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 33

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:14.274692Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 9b12dd8a-9c86-4344-bb75-0f38feca585a · outbound

This paper cites Fring, An introduction to PT-symmetric quantum mechanics-time-dependent systems, in J.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Fring, An introduction to PT-symmetric quantum mechanics-time-dependent systems, in J

Reference 34

Resolution: verified fuzzy; raw_fallback, observed 2026-08-06T22:36:14.173630Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 2793150f-4c63-4be8-9835-f32c9e1f2921 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 35

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:14.045591Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation 62d3944a-ebd6-41b2-9b40-442d00859942 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 36

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:13.895519Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Observation fcc12a14-92c5-47a1-be14-1e651ddfe258 · outbound

This paper cites an unresolved cited work.

Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations Unresolved cited work

Reference 37

Resolution: unresolved; raw_fallback, observed 2026-08-06T22:36:13.766162Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.

Pith citing papers

Observation 31a26a2b-99cb-4f79-b110-62a68ecf9965 · inbound

Hidden $\mathfrak{u}(2,1)$ symmetry and Jordan chains in a resonant ghostly three-dimensional model cites this paper.

Hidden $\mathfrak{u}(2,1)$ symmetry and Jordan chains in a resonant ghostly three-dimensional model Ghost-Free Quantisation of Higher Time-Derivative Theories via Non-Unitary Similarity Transformations

Reference 32

Resolution: verified exact; arxiv_id, observed 2026-07-01T23:46:23.464139Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.