{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:NL2NHQYZLSKX45ZCCLLDCDNHIF","short_pith_number":"pith:NL2NHQYZ","canonical_record":{"source":{"id":"1006.1215","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-06-07T09:41:14Z","cross_cats_sorted":[],"title_canon_sha256":"f195f2a6b97b271c30df94a29b40fc78e412eb0f2c3785a78707abce80fc63cf","abstract_canon_sha256":"773a3de008dc25f257bd4dc8390111568159a3d7d4ea284684a597e209304869"},"schema_version":"1.0"},"canonical_sha256":"6af4d3c3195c957e772212d6310da741500e3aaf0fe190a1b9be8a49ecda85ba","source":{"kind":"arxiv","id":"1006.1215","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.1215","created_at":"2026-05-18T04:41:35Z"},{"alias_kind":"arxiv_version","alias_value":"1006.1215v1","created_at":"2026-05-18T04:41:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.1215","created_at":"2026-05-18T04:41:35Z"},{"alias_kind":"pith_short_12","alias_value":"NL2NHQYZLSKX","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NL2NHQYZLSKX45ZC","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NL2NHQYZ","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:NL2NHQYZLSKX45ZCCLLDCDNHIF","target":"record","payload":{"canonical_record":{"source":{"id":"1006.1215","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-06-07T09:41:14Z","cross_cats_sorted":[],"title_canon_sha256":"f195f2a6b97b271c30df94a29b40fc78e412eb0f2c3785a78707abce80fc63cf","abstract_canon_sha256":"773a3de008dc25f257bd4dc8390111568159a3d7d4ea284684a597e209304869"},"schema_version":"1.0"},"canonical_sha256":"6af4d3c3195c957e772212d6310da741500e3aaf0fe190a1b9be8a49ecda85ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:41:35.740659Z","signature_b64":"MY4DwB2y5d8EBb6ApHe7FaEwrsiTm0vucJVBbM0/MJXJVRIdL+yn3VST96zxySvMM1iIA1cqKeoSHyNBlZ25BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6af4d3c3195c957e772212d6310da741500e3aaf0fe190a1b9be8a49ecda85ba","last_reissued_at":"2026-05-18T04:41:35.740236Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:41:35.740236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1006.1215","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:41:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3GYYxZRDpDTGKbDpEDSBgwdexKhcCGD1ISTvvod1dLuq/3LE3jUgJwiZ1NkPo64ncXxWB3xxnUNyZl9eMUSWCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T08:25:09.207636Z"},"content_sha256":"8b4f62b2d994a4833013f291dbd73c3280790f095b4aedc659875475b57700cf","schema_version":"1.0","event_id":"sha256:8b4f62b2d994a4833013f291dbd73c3280790f095b4aedc659875475b57700cf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:NL2NHQYZLSKX45ZCCLLDCDNHIF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The t-J model on a semi-infinite lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. Sherman, N. Voropajeva","submitted_at":"2010-06-07T09:41:14Z","abstract_excerpt":"The hole spectral function of the t-J model on a two-dimensional semi-infinite lattice is calculated using the spin-wave and noncrossing approximations. In the case of small hole concentration and strong correlations, $t\\gg J$, several near-boundary site rows appear to be depleted of holes. The reason for this depletion is a deformation of the magnon cloud, which surrounds the hole, near the boundary. The hole depletion in the boundary region leads to a more complicated spectral function in the boundary row in comparison with its bulk shape."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.1215","kind":"arxiv","version":1},"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":"2026-05-18T04:41:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GFbyWua3f+i3DE/gf8B5VExJuId5d7LrJ4USb6Bk4CCj901icPdsE1ss2HR98rsY0MYphFY7tVGEYQ4UpQwdCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T08:25:09.207985Z"},"content_sha256":"aa8200da4807933cdfe96e0c511cba59aa43669d74fe79bcf695ee26978f3fac","schema_version":"1.0","event_id":"sha256:aa8200da4807933cdfe96e0c511cba59aa43669d74fe79bcf695ee26978f3fac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NL2NHQYZLSKX45ZCCLLDCDNHIF/bundle.json","state_url":"https://pith.science/pith/NL2NHQYZLSKX45ZCCLLDCDNHIF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NL2NHQYZLSKX45ZCCLLDCDNHIF/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":"2026-06-02T08:25:09Z","links":{"resolver":"https://pith.science/pith/NL2NHQYZLSKX45ZCCLLDCDNHIF","bundle":"https://pith.science/pith/NL2NHQYZLSKX45ZCCLLDCDNHIF/bundle.json","state":"https://pith.science/pith/NL2NHQYZLSKX45ZCCLLDCDNHIF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NL2NHQYZLSKX45ZCCLLDCDNHIF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:NL2NHQYZLSKX45ZCCLLDCDNHIF","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":"773a3de008dc25f257bd4dc8390111568159a3d7d4ea284684a597e209304869","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-06-07T09:41:14Z","title_canon_sha256":"f195f2a6b97b271c30df94a29b40fc78e412eb0f2c3785a78707abce80fc63cf"},"schema_version":"1.0","source":{"id":"1006.1215","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.1215","created_at":"2026-05-18T04:41:35Z"},{"alias_kind":"arxiv_version","alias_value":"1006.1215v1","created_at":"2026-05-18T04:41:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.1215","created_at":"2026-05-18T04:41:35Z"},{"alias_kind":"pith_short_12","alias_value":"NL2NHQYZLSKX","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NL2NHQYZLSKX45ZC","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NL2NHQYZ","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:aa8200da4807933cdfe96e0c511cba59aa43669d74fe79bcf695ee26978f3fac","target":"graph","created_at":"2026-05-18T04:41:35Z","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":"The hole spectral function of the t-J model on a two-dimensional semi-infinite lattice is calculated using the spin-wave and noncrossing approximations. In the case of small hole concentration and strong correlations, $t\\gg J$, several near-boundary site rows appear to be depleted of holes. The reason for this depletion is a deformation of the magnon cloud, which surrounds the hole, near the boundary. The hole depletion in the boundary region leads to a more complicated spectral function in the boundary row in comparison with its bulk shape.","authors_text":"A. Sherman, N. Voropajeva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-06-07T09:41:14Z","title":"The t-J model on a semi-infinite lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.1215","kind":"arxiv","version":1},"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":"sha256:8b4f62b2d994a4833013f291dbd73c3280790f095b4aedc659875475b57700cf","target":"record","created_at":"2026-05-18T04:41:35Z","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":"773a3de008dc25f257bd4dc8390111568159a3d7d4ea284684a597e209304869","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-06-07T09:41:14Z","title_canon_sha256":"f195f2a6b97b271c30df94a29b40fc78e412eb0f2c3785a78707abce80fc63cf"},"schema_version":"1.0","source":{"id":"1006.1215","kind":"arxiv","version":1}},"canonical_sha256":"6af4d3c3195c957e772212d6310da741500e3aaf0fe190a1b9be8a49ecda85ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6af4d3c3195c957e772212d6310da741500e3aaf0fe190a1b9be8a49ecda85ba","first_computed_at":"2026-05-18T04:41:35.740236Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:41:35.740236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MY4DwB2y5d8EBb6ApHe7FaEwrsiTm0vucJVBbM0/MJXJVRIdL+yn3VST96zxySvMM1iIA1cqKeoSHyNBlZ25BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:41:35.740659Z","signed_message":"canonical_sha256_bytes"},"source_id":"1006.1215","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8b4f62b2d994a4833013f291dbd73c3280790f095b4aedc659875475b57700cf","sha256:aa8200da4807933cdfe96e0c511cba59aa43669d74fe79bcf695ee26978f3fac"],"state_sha256":"43b681daf8a9a0ed5222d82e593892f98ec65fe67e7a8fe11c10a5d9998c57fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0Oe45xhREkpk/Orfnow1DZb/a7q4h6kvWAXOOtYE0110klILiQ1GnSvnX4q7pMrrBrxjNEG8XANt9AYOpjtgAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T08:25:09.210090Z","bundle_sha256":"655d9bebcc54855eaabb6768faec0712f4f5e6f220dae978550f20aaf0b55161"}}