{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:AOCALMU7JSZKR5XWFWD2R6Y2BH","short_pith_number":"pith:AOCALMU7","canonical_record":{"source":{"id":"1204.5211","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-23T21:23:41Z","cross_cats_sorted":[],"title_canon_sha256":"9887cd0165fdadad731c3c2141de9494428d8b52a5cfb3923cbe79b718fdba49","abstract_canon_sha256":"96617630bc0595aa4c1fcbddf202f90a4b841aa9839a8c28fe25930792f220cc"},"schema_version":"1.0"},"canonical_sha256":"038405b29f4cb2a8f6f62d87a8fb1a09d7fda9c39ce2f895fb3626d4f3126cc3","source":{"kind":"arxiv","id":"1204.5211","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.5211","created_at":"2026-05-18T03:38:02Z"},{"alias_kind":"arxiv_version","alias_value":"1204.5211v1","created_at":"2026-05-18T03:38:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.5211","created_at":"2026-05-18T03:38:02Z"},{"alias_kind":"pith_short_12","alias_value":"AOCALMU7JSZK","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"AOCALMU7JSZKR5XW","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"AOCALMU7","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:AOCALMU7JSZKR5XWFWD2R6Y2BH","target":"record","payload":{"canonical_record":{"source":{"id":"1204.5211","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-23T21:23:41Z","cross_cats_sorted":[],"title_canon_sha256":"9887cd0165fdadad731c3c2141de9494428d8b52a5cfb3923cbe79b718fdba49","abstract_canon_sha256":"96617630bc0595aa4c1fcbddf202f90a4b841aa9839a8c28fe25930792f220cc"},"schema_version":"1.0"},"canonical_sha256":"038405b29f4cb2a8f6f62d87a8fb1a09d7fda9c39ce2f895fb3626d4f3126cc3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:38:02.829583Z","signature_b64":"WZsoKtVe/GqrKvYGaqEO1wCRqXcAGM/V1sRqCxhdj5SB8h6Z/DwPqFZVhaxuxJMXzUCDup5njOE3yN02AZ6vCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"038405b29f4cb2a8f6f62d87a8fb1a09d7fda9c39ce2f895fb3626d4f3126cc3","last_reissued_at":"2026-05-18T03:38:02.828752Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:38:02.828752Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.5211","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":"2026-05-18T03:38:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2DYF04xWyvaMcAb1l5M8urV4ucK4nfQUiCmYENn2hAdXI/+y5yUSx8nTRmkrXKn3RFThkgMDMnxRcwVcgwQUCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T15:42:38.776243Z"},"content_sha256":"491300958b4008c436dc8023aac996004c58444435ce760b0bd78c9bcd18c1ad","schema_version":"1.0","event_id":"sha256:491300958b4008c436dc8023aac996004c58444435ce760b0bd78c9bcd18c1ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:AOCALMU7JSZKR5XWFWD2R6Y2BH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Collective Modes of Massive Dirac Fermions in Armchair Graphene Nanoribbons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"David R. Andersen, Hassan Raza","submitted_at":"2012-04-23T21:23:41Z","abstract_excerpt":"We report the plasmon dispersion characteristics of intrinsic and extrinsic armchair graphene nanoribbons of atomic width N = 5 using a p_z-orbital tight binding model with third-nearest-neighbor (3nn) coupling. The coupling parameters are obtained by fitting the 3nn dispersions to that of an extended Huckel theory. The resultant massive Dirac Fermion system has a band gap E_g \\approx 64 meV. The extrinsic plasmon dispersion relation is found to approach a common dispersion curve as the chemical potential $\\mu$ increases, whereas the intrinsic plasmon dispersion relation is found to have both "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5211","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":"2026-05-18T03:38:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vxlWasQGFdzeLv62ZII/ambj3wSwyiYXMnV1/YWxe3pNab3/IeC1ZlH6tjI6dLY79OZxezNhp+z39sMRQXl2BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T15:42:38.776604Z"},"content_sha256":"1c255c61689d24be928e0d9011653c247984342efaa0c1f65c8b1ce652a1e22e","schema_version":"1.0","event_id":"sha256:1c255c61689d24be928e0d9011653c247984342efaa0c1f65c8b1ce652a1e22e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AOCALMU7JSZKR5XWFWD2R6Y2BH/bundle.json","state_url":"https://pith.science/pith/AOCALMU7JSZKR5XWFWD2R6Y2BH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AOCALMU7JSZKR5XWFWD2R6Y2BH/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":"2026-06-29T15:42:38Z","links":{"resolver":"https://pith.science/pith/AOCALMU7JSZKR5XWFWD2R6Y2BH","bundle":"https://pith.science/pith/AOCALMU7JSZKR5XWFWD2R6Y2BH/bundle.json","state":"https://pith.science/pith/AOCALMU7JSZKR5XWFWD2R6Y2BH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AOCALMU7JSZKR5XWFWD2R6Y2BH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:AOCALMU7JSZKR5XWFWD2R6Y2BH","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":"96617630bc0595aa4c1fcbddf202f90a4b841aa9839a8c28fe25930792f220cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-23T21:23:41Z","title_canon_sha256":"9887cd0165fdadad731c3c2141de9494428d8b52a5cfb3923cbe79b718fdba49"},"schema_version":"1.0","source":{"id":"1204.5211","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.5211","created_at":"2026-05-18T03:38:02Z"},{"alias_kind":"arxiv_version","alias_value":"1204.5211v1","created_at":"2026-05-18T03:38:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.5211","created_at":"2026-05-18T03:38:02Z"},{"alias_kind":"pith_short_12","alias_value":"AOCALMU7JSZK","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"AOCALMU7JSZKR5XW","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"AOCALMU7","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:1c255c61689d24be928e0d9011653c247984342efaa0c1f65c8b1ce652a1e22e","target":"graph","created_at":"2026-05-18T03:38:02Z","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 report the plasmon dispersion characteristics of intrinsic and extrinsic armchair graphene nanoribbons of atomic width N = 5 using a p_z-orbital tight binding model with third-nearest-neighbor (3nn) coupling. The coupling parameters are obtained by fitting the 3nn dispersions to that of an extended Huckel theory. The resultant massive Dirac Fermion system has a band gap E_g \\approx 64 meV. The extrinsic plasmon dispersion relation is found to approach a common dispersion curve as the chemical potential $\\mu$ increases, whereas the intrinsic plasmon dispersion relation is found to have both ","authors_text":"David R. Andersen, Hassan Raza","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-23T21:23:41Z","title":"Collective Modes of Massive Dirac Fermions in Armchair Graphene Nanoribbons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5211","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":"sha256:491300958b4008c436dc8023aac996004c58444435ce760b0bd78c9bcd18c1ad","target":"record","created_at":"2026-05-18T03:38:02Z","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":"96617630bc0595aa4c1fcbddf202f90a4b841aa9839a8c28fe25930792f220cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-04-23T21:23:41Z","title_canon_sha256":"9887cd0165fdadad731c3c2141de9494428d8b52a5cfb3923cbe79b718fdba49"},"schema_version":"1.0","source":{"id":"1204.5211","kind":"arxiv","version":1}},"canonical_sha256":"038405b29f4cb2a8f6f62d87a8fb1a09d7fda9c39ce2f895fb3626d4f3126cc3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"038405b29f4cb2a8f6f62d87a8fb1a09d7fda9c39ce2f895fb3626d4f3126cc3","first_computed_at":"2026-05-18T03:38:02.828752Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:38:02.828752Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WZsoKtVe/GqrKvYGaqEO1wCRqXcAGM/V1sRqCxhdj5SB8h6Z/DwPqFZVhaxuxJMXzUCDup5njOE3yN02AZ6vCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:38:02.829583Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.5211","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:491300958b4008c436dc8023aac996004c58444435ce760b0bd78c9bcd18c1ad","sha256:1c255c61689d24be928e0d9011653c247984342efaa0c1f65c8b1ce652a1e22e"],"state_sha256":"ea92331068c23c39c70103a0fb442ba687dddb2f86ca36334deeb0744f8d7035"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9PSnJWEnjPOrbTzPxqT2aaj3dHhHgMAurGR/XkEjcecduCZZSIGnjtijSaNs7UXFknmIOnkFmHbLt8C5HgasCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T15:42:38.778413Z","bundle_sha256":"10e8a5ec0475af5015a597eec328c8ba12efbef1b60acbefe706085a968d0a05"}}