{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:4LOBMEF3LHWSQ7HQ5U2W45WBQC","short_pith_number":"pith:4LOBMEF3","canonical_record":{"source":{"id":"1311.2420","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-11-11T11:42:00Z","cross_cats_sorted":[],"title_canon_sha256":"51fd627ee22895dc072f5c71e58ceee6141e36f8a4b4f1a184125817146ad306","abstract_canon_sha256":"9c14b4a10014859c7e632178fca77cf2d93f57ac246a8be5574cd8c070b0acf2"},"schema_version":"1.0"},"canonical_sha256":"e2dc1610bb59ed287cf0ed356e76c1809dd8ad7d274fd61c6d3faa16f961295b","source":{"kind":"arxiv","id":"1311.2420","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.2420","created_at":"2026-05-18T03:07:32Z"},{"alias_kind":"arxiv_version","alias_value":"1311.2420v1","created_at":"2026-05-18T03:07:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.2420","created_at":"2026-05-18T03:07:32Z"},{"alias_kind":"pith_short_12","alias_value":"4LOBMEF3LHWS","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4LOBMEF3LHWSQ7HQ","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4LOBMEF3","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:4LOBMEF3LHWSQ7HQ5U2W45WBQC","target":"record","payload":{"canonical_record":{"source":{"id":"1311.2420","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-11-11T11:42:00Z","cross_cats_sorted":[],"title_canon_sha256":"51fd627ee22895dc072f5c71e58ceee6141e36f8a4b4f1a184125817146ad306","abstract_canon_sha256":"9c14b4a10014859c7e632178fca77cf2d93f57ac246a8be5574cd8c070b0acf2"},"schema_version":"1.0"},"canonical_sha256":"e2dc1610bb59ed287cf0ed356e76c1809dd8ad7d274fd61c6d3faa16f961295b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:07:32.701370Z","signature_b64":"Lj5yWid3S7ODQV+v0oEoH6TL6UB+HUjAfx0wffD1FgKzvIorm6Fm0bJb7aqwehmbv/cPLI6OBJ1yBo7yw3ZJAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e2dc1610bb59ed287cf0ed356e76c1809dd8ad7d274fd61c6d3faa16f961295b","last_reissued_at":"2026-05-18T03:07:32.700864Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:07:32.700864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.2420","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":"2026-05-18T03:07:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jd+kWnKNNmxcERfiKZzFLLT9S8rAwPHMuk/bPbE6LiHlHrTUegR7rtyHfTFHo9rm1DasfB5niwvjBFmUOP0wDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T21:56:58.489722Z"},"content_sha256":"d9ca0b848006882ea146dc55ff90fd892d9cb11fb9e5098be7102f69ffc4e5f7","schema_version":"1.0","event_id":"sha256:d9ca0b848006882ea146dc55ff90fd892d9cb11fb9e5098be7102f69ffc4e5f7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:4LOBMEF3LHWSQ7HQ5U2W45WBQC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Monte-Carlo simulation of graphene in terms of occupation numbers for the excitonic order parameter at hexagonal lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Anna Sinelnikova, Maxim Ulybyshev, Oleg Pavlovsky","submitted_at":"2013-11-11T11:42:00Z","abstract_excerpt":"We present the results of the Monte-Carlo simulation of graphene-like statistical model in terms of occupation numbers. We study the problem of the phase transition in graphene to an insulating phase. Only antiferromagnetic order parameter was studied at the moment by means of Hybrid Monte-Carlo process on the hexagonal lattice because of the sign problem for excitonic order parameter in fermionic determinant. Therefore we have studied the possibility of the phase transition to an excitonic phase by means of simplified Monte-Carlo process on the hexagonal lattice. We show that this phase, whic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.2420","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":"2026-05-18T03:07:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZxhkpggszqrN3/kja6/COPGaJsMssRYjAeVsv4n9TgFi68HvPkPvF+kUsDoFAjOmQhM3qKAUk+tRo8nNHjs2Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T21:56:58.490064Z"},"content_sha256":"be729d8cfd94f6a0466312f71d34fcb02c5d5daa1cb8333593bcef7ef3dcdce2","schema_version":"1.0","event_id":"sha256:be729d8cfd94f6a0466312f71d34fcb02c5d5daa1cb8333593bcef7ef3dcdce2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4LOBMEF3LHWSQ7HQ5U2W45WBQC/bundle.json","state_url":"https://pith.science/pith/4LOBMEF3LHWSQ7HQ5U2W45WBQC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4LOBMEF3LHWSQ7HQ5U2W45WBQC/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":"2026-05-30T21:56:58Z","links":{"resolver":"https://pith.science/pith/4LOBMEF3LHWSQ7HQ5U2W45WBQC","bundle":"https://pith.science/pith/4LOBMEF3LHWSQ7HQ5U2W45WBQC/bundle.json","state":"https://pith.science/pith/4LOBMEF3LHWSQ7HQ5U2W45WBQC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4LOBMEF3LHWSQ7HQ5U2W45WBQC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:4LOBMEF3LHWSQ7HQ5U2W45WBQC","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":"9c14b4a10014859c7e632178fca77cf2d93f57ac246a8be5574cd8c070b0acf2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-11-11T11:42:00Z","title_canon_sha256":"51fd627ee22895dc072f5c71e58ceee6141e36f8a4b4f1a184125817146ad306"},"schema_version":"1.0","source":{"id":"1311.2420","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.2420","created_at":"2026-05-18T03:07:32Z"},{"alias_kind":"arxiv_version","alias_value":"1311.2420v1","created_at":"2026-05-18T03:07:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.2420","created_at":"2026-05-18T03:07:32Z"},{"alias_kind":"pith_short_12","alias_value":"4LOBMEF3LHWS","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4LOBMEF3LHWSQ7HQ","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4LOBMEF3","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:be729d8cfd94f6a0466312f71d34fcb02c5d5daa1cb8333593bcef7ef3dcdce2","target":"graph","created_at":"2026-05-18T03:07:32Z","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 present the results of the Monte-Carlo simulation of graphene-like statistical model in terms of occupation numbers. We study the problem of the phase transition in graphene to an insulating phase. Only antiferromagnetic order parameter was studied at the moment by means of Hybrid Monte-Carlo process on the hexagonal lattice because of the sign problem for excitonic order parameter in fermionic determinant. Therefore we have studied the possibility of the phase transition to an excitonic phase by means of simplified Monte-Carlo process on the hexagonal lattice. We show that this phase, whic","authors_text":"Anna Sinelnikova, Maxim Ulybyshev, Oleg Pavlovsky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-11-11T11:42:00Z","title":"Monte-Carlo simulation of graphene in terms of occupation numbers for the excitonic order parameter at hexagonal lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.2420","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:d9ca0b848006882ea146dc55ff90fd892d9cb11fb9e5098be7102f69ffc4e5f7","target":"record","created_at":"2026-05-18T03:07:32Z","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":"9c14b4a10014859c7e632178fca77cf2d93f57ac246a8be5574cd8c070b0acf2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-11-11T11:42:00Z","title_canon_sha256":"51fd627ee22895dc072f5c71e58ceee6141e36f8a4b4f1a184125817146ad306"},"schema_version":"1.0","source":{"id":"1311.2420","kind":"arxiv","version":1}},"canonical_sha256":"e2dc1610bb59ed287cf0ed356e76c1809dd8ad7d274fd61c6d3faa16f961295b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e2dc1610bb59ed287cf0ed356e76c1809dd8ad7d274fd61c6d3faa16f961295b","first_computed_at":"2026-05-18T03:07:32.700864Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:07:32.700864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lj5yWid3S7ODQV+v0oEoH6TL6UB+HUjAfx0wffD1FgKzvIorm6Fm0bJb7aqwehmbv/cPLI6OBJ1yBo7yw3ZJAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:07:32.701370Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.2420","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9ca0b848006882ea146dc55ff90fd892d9cb11fb9e5098be7102f69ffc4e5f7","sha256:be729d8cfd94f6a0466312f71d34fcb02c5d5daa1cb8333593bcef7ef3dcdce2"],"state_sha256":"e0bde17f20ffa0864a1ee81ef6a0ebd28706aa56ab56711fbe7986eadcd29b3d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0nlUBjKGTuyi58Xn+89zwF0bi6m+0znyWSIBA3S+bpCiJnFRAwzrHBm0hNpu7qpvyyY9FsAUKYxSeqhZjSG9Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T21:56:58.492383Z","bundle_sha256":"6f598de1a40751ed0ee2ea8d0605b3ec58b3dade9b36c005b30aabdc205c2ecd"}}