{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:HXVEN7B6BAGXK74USERVAVS5SS","short_pith_number":"pith:HXVEN7B6","canonical_record":{"source":{"id":"1107.0143","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-01T08:30:53Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"9fb241edbb34ca5eb8563346c79dff17d1ed6a146d4e6fe3d779f25726795bbf","abstract_canon_sha256":"550c4054fec4f4d82806158e43fbf7cce2fb8f6e5b0b3bb3028dd7a14f1bcdcd"},"schema_version":"1.0"},"canonical_sha256":"3dea46fc3e080d757f94912350565d948db74bb23e5064f246305ae976dd571f","source":{"kind":"arxiv","id":"1107.0143","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.0143","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"arxiv_version","alias_value":"1107.0143v2","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.0143","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"pith_short_12","alias_value":"HXVEN7B6BAGX","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HXVEN7B6BAGXK74U","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HXVEN7B6","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:HXVEN7B6BAGXK74USERVAVS5SS","target":"record","payload":{"canonical_record":{"source":{"id":"1107.0143","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-01T08:30:53Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"9fb241edbb34ca5eb8563346c79dff17d1ed6a146d4e6fe3d779f25726795bbf","abstract_canon_sha256":"550c4054fec4f4d82806158e43fbf7cce2fb8f6e5b0b3bb3028dd7a14f1bcdcd"},"schema_version":"1.0"},"canonical_sha256":"3dea46fc3e080d757f94912350565d948db74bb23e5064f246305ae976dd571f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:10:46.933384Z","signature_b64":"ffk0PBREtvs/40W71qTMDUC7l/XorAKvYLVsqyTWaQN4vSlNQTaLMT3RdZQWOq/7d9iGFua0p+fBv/GzoSPUAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3dea46fc3e080d757f94912350565d948db74bb23e5064f246305ae976dd571f","last_reissued_at":"2026-05-18T04:10:46.932941Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:10:46.932941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.0143","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:10:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mCUNVeMCaN9Ssn7Fsbs1qCQXWUnQ/8THgEUR/xziG45vWFwnNjwf966ljAXfGVRCv5XY+b9C64ITBS1TTDJxCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:18:48.756947Z"},"content_sha256":"a42801b7497ec5ce922d66b41c72dea9023b49bc52be27b7ebce45481eb721c3","schema_version":"1.0","event_id":"sha256:a42801b7497ec5ce922d66b41c72dea9023b49bc52be27b7ebce45481eb721c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:HXVEN7B6BAGXK74USERVAVS5SS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fate of Dirac Points in a Vortex Superlattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.str-el","authors_text":"J. Vidal, K. P. Schmidt, M. Kamfor, S. Dusuel","submitted_at":"2011-07-01T08:30:53Z","abstract_excerpt":"We consider noninteracting fermions on the honeycomb lattice in the presence of a magnetic vortex superlattice. It is shown that depending on the superlattice periodicity, a gap may open at zero energy. We derive an expression of the gap in the small-flux limit but the main qualitative features are found to be valid for arbitrary fluxes. This study provides an original example of a metal-insulator transition induced by a strongly modulated magnetic field in graphene. At the same time our results directly apply to Kitaev's honeycomb model in a vortex superlattice."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.0143","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:10:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZUgak6TDkzjDH3QygYhVsSucOFZvDus8opw5JBK7jY6pYXbAud3Jq+/W5wTXy/GDjrBBrEUM+5DKwSA71wFjBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:18:48.757530Z"},"content_sha256":"2dbc44f6ffc041e6480029ad7be4c05f2edf86529b10ae2cc16526833f1b825c","schema_version":"1.0","event_id":"sha256:2dbc44f6ffc041e6480029ad7be4c05f2edf86529b10ae2cc16526833f1b825c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HXVEN7B6BAGXK74USERVAVS5SS/bundle.json","state_url":"https://pith.science/pith/HXVEN7B6BAGXK74USERVAVS5SS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HXVEN7B6BAGXK74USERVAVS5SS/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T19:18:48Z","links":{"resolver":"https://pith.science/pith/HXVEN7B6BAGXK74USERVAVS5SS","bundle":"https://pith.science/pith/HXVEN7B6BAGXK74USERVAVS5SS/bundle.json","state":"https://pith.science/pith/HXVEN7B6BAGXK74USERVAVS5SS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HXVEN7B6BAGXK74USERVAVS5SS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:HXVEN7B6BAGXK74USERVAVS5SS","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"550c4054fec4f4d82806158e43fbf7cce2fb8f6e5b0b3bb3028dd7a14f1bcdcd","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-01T08:30:53Z","title_canon_sha256":"9fb241edbb34ca5eb8563346c79dff17d1ed6a146d4e6fe3d779f25726795bbf"},"schema_version":"1.0","source":{"id":"1107.0143","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.0143","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"arxiv_version","alias_value":"1107.0143v2","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.0143","created_at":"2026-05-18T04:10:46Z"},{"alias_kind":"pith_short_12","alias_value":"HXVEN7B6BAGX","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HXVEN7B6BAGXK74U","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HXVEN7B6","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:2dbc44f6ffc041e6480029ad7be4c05f2edf86529b10ae2cc16526833f1b825c","target":"graph","created_at":"2026-05-18T04:10:46Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We consider noninteracting fermions on the honeycomb lattice in the presence of a magnetic vortex superlattice. It is shown that depending on the superlattice periodicity, a gap may open at zero energy. We derive an expression of the gap in the small-flux limit but the main qualitative features are found to be valid for arbitrary fluxes. This study provides an original example of a metal-insulator transition induced by a strongly modulated magnetic field in graphene. At the same time our results directly apply to Kitaev's honeycomb model in a vortex superlattice.","authors_text":"J. Vidal, K. P. Schmidt, M. Kamfor, S. Dusuel","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-01T08:30:53Z","title":"Fate of Dirac Points in a Vortex Superlattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.0143","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:a42801b7497ec5ce922d66b41c72dea9023b49bc52be27b7ebce45481eb721c3","target":"record","created_at":"2026-05-18T04:10:46Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"550c4054fec4f4d82806158e43fbf7cce2fb8f6e5b0b3bb3028dd7a14f1bcdcd","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-01T08:30:53Z","title_canon_sha256":"9fb241edbb34ca5eb8563346c79dff17d1ed6a146d4e6fe3d779f25726795bbf"},"schema_version":"1.0","source":{"id":"1107.0143","kind":"arxiv","version":2}},"canonical_sha256":"3dea46fc3e080d757f94912350565d948db74bb23e5064f246305ae976dd571f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3dea46fc3e080d757f94912350565d948db74bb23e5064f246305ae976dd571f","first_computed_at":"2026-05-18T04:10:46.932941Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:10:46.932941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ffk0PBREtvs/40W71qTMDUC7l/XorAKvYLVsqyTWaQN4vSlNQTaLMT3RdZQWOq/7d9iGFua0p+fBv/GzoSPUAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:10:46.933384Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.0143","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a42801b7497ec5ce922d66b41c72dea9023b49bc52be27b7ebce45481eb721c3","sha256:2dbc44f6ffc041e6480029ad7be4c05f2edf86529b10ae2cc16526833f1b825c"],"state_sha256":"21703a2567554f87256e9fc2f4b85c29bc9decb559f74241c9c71092385f157a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5G5Gl1ir82Dv5tafZRCukIqZqqxLhKodUwBu9gdr6BnEOdPaLyFsOasxsDeHbHRLtkVbbdtjHLCXHS6QtlTrBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T19:18:48.760401Z","bundle_sha256":"cd4ca57c6d8746e6ad5ff526d39aec834d4d250f77b3382b61c1161701fc0c78"}}