Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T05:29:21.509485Z
Paper Citation Record · LEDGER
As of 16 August 2026, this Paper Citation Record lists 27 of 27 outbound references and 1 inbound Pith citation observation for arXiv:1909.01516.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T05:29:21.509485Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-16T06:30:59.297886+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-05-23T18:00:24.865241Z
A source-named dated measurement, never combined with another source.
Source: arxiv_reference, observed 2026-05-23T18:03:18.252741Z
27 of 27 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 3b4afcba-ee72-4ea0-bda7-e4d4b30238e7 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Entanglement subvolume law for 2D frustration-free spin systems
Reference 1
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 3798a121-483d-4710-987d-b361db040820 · outbound
Improved local spectral gap thresholds for lattices of finite dimension The detectability lemma and quantum gap amplification
Reference 2
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 8b3be8ab-1e63-4b37-8f3f-4fd02f84bf90 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Simple proof of the detectability lemma and spectral gap amplification
Reference 3
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 044ea66a-9315-4c87-995e-d0114e5349b0 · outbound
Improved local spectral gap thresholds for lattices of finite dimension An area law and sub-exponential algorithm for 1D systems
Reference 4
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation fefda5ca-bbf4-4898-95c5-fa711fe9c0ca · outbound
Improved local spectral gap thresholds for lattices of finite dimension An improved 1d area law for frustration-free systems
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation fa35af03-b036-4447-8350-390df4532153 · outbound
Improved local spectral gap thresholds for lattices of finite dimension A class of two-dimensional AKLT models with a gap
Reference 6
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation cc86607c-c405-4213-8266-833c8c8947dd · outbound
Improved local spectral gap thresholds for lattices of finite dimension Undecidability of the Spectral Gap in One Dimension
Reference 7
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation b0cd8a88-cfc1-4ac3-9644-fc5f93f529a6 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Gapped and gapless phases of frustration-free spin-12 chains
Reference 8
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 062f0b1a-c201-4da2-b3f0-db3e19d1010c · outbound
Improved local spectral gap thresholds for lattices of finite dimension Unresolved cited work
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation fd3acc70-e065-43e5-9627-ab445cee11fb · outbound
Improved local spectral gap thresholds for lattices of finite dimension Cubitt, David Perez-Garcia, and Michael M
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 3433cf13-7291-424f-b762-aa14b1316401 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Eldar and A
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 1de42f32-ce0b-4c3f-9622-e6a5285b0fd7 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Unresolved cited work
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 003c22f7-4f3e-4253-8bcd-f1831f876c62 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Correlation length versus gap in frustration-free systems
Reference 13
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 29f56856-838c-4f1d-893a-67dd87f5cd23 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Local gap threshold for frustration-free spin systems
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 1483f0a8-0b70-4392-8c10-2054486ec637 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Personal communication
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation d3ea0824-71c6-47e7-83ea-79bf1e931eb0 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Unresolved cited work
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 6c35cf30-fbc0-4d6b-b9b1-aaf14567e694 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Unresolved cited work
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 1157fb4c-0678-4e76-a893-bfa61fce5770 · outbound
Improved local spectral gap thresholds for lattices of finite dimension Hastings and Tohru Koma
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 1271c19b-7b0b-457b-942b-a81fbc6b369b · outbound
Improved local spectral gap thresholds for lattices of finite dimension Essai sur la g\` e om\` e trie \' a n dimensions
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation d9a28f28-3ad4-47f2-ae39-1278b4e1dbdc · outbound
Improved local spectral gap thresholds for lattices of finite dimension Divide and conquer method for proving gaps of frustration free hamiltonians
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation c564a381-415a-4948-bcf5-e09ce4b3689b · outbound
Improved local spectral gap thresholds for lattices of finite dimension Energy gaps and elementary excitations for certain vbs-quantum antiferromagnets
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 6991a419-28e0-405c-a4c5-db06a0cde78d · outbound
Improved local spectral gap thresholds for lattices of finite dimension Finite-size criteria for spectral gaps in $D$-dimensional quantum spin systems
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 288ae754-affa-48c2-801d-a32aa7c086be · outbound
Improved local spectral gap thresholds for lattices of finite dimension Gaplessness is not generic for translation-invariant spin chains
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 69c89804-b4e9-46df-ba13-4696ce3de57b · outbound
Improved local spectral gap thresholds for lattices of finite dimension Spectral gaps of frustration-free spin systems with boundary
Reference 24
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 81f5f354-3bff-45b2-9621-cc903704d4ec · outbound
Improved local spectral gap thresholds for lattices of finite dimension The AKLT model on a hexagonal chain is gapped
Reference 25
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 6fc94ce2-a128-4c19-b522-4ebda42a4431 · outbound
Improved local spectral gap thresholds for lattices of finite dimension The spectral gap for some spin chains with discrete symmetry breaking
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 4296e1d3-444f-4950-8776-302cc78ecafb · outbound
Improved local spectral gap thresholds for lattices of finite dimension Lieb-robinson bounds and the exponential clustering theorem
Reference 27
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 93c75708-9636-4eea-9a82-e2807d4f10aa · inbound
A Hierarchy of Spectral Gap Certificates for Frustration-Free Spin Systems Improved local spectral gap thresholds for lattices of finite dimension
Reference 24
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.