{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:HUK3YNO63X6A5IX6AB3UJ6PNWD","short_pith_number":"pith:HUK3YNO6","canonical_record":{"source":{"id":"0906.2856","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-06-16T07:51:06Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"a7104340793275f9f5fd621e1227a7a3927efa7b18ff33c9da21f744da116d83","abstract_canon_sha256":"afc8dcf272b77879d11a9cfc4882b6de90af644aa5d7f9c0f33be081c8e35444"},"schema_version":"1.0"},"canonical_sha256":"3d15bc35deddfc0ea2fe007744f9edb0c401d84acea8f64e1e001b6d73bce1f6","source":{"kind":"arxiv","id":"0906.2856","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.2856","created_at":"2026-05-18T02:13:19Z"},{"alias_kind":"arxiv_version","alias_value":"0906.2856v2","created_at":"2026-05-18T02:13:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.2856","created_at":"2026-05-18T02:13:19Z"},{"alias_kind":"pith_short_12","alias_value":"HUK3YNO63X6A","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"HUK3YNO63X6A5IX6","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"HUK3YNO6","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:HUK3YNO63X6A5IX6AB3UJ6PNWD","target":"record","payload":{"canonical_record":{"source":{"id":"0906.2856","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-06-16T07:51:06Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"a7104340793275f9f5fd621e1227a7a3927efa7b18ff33c9da21f744da116d83","abstract_canon_sha256":"afc8dcf272b77879d11a9cfc4882b6de90af644aa5d7f9c0f33be081c8e35444"},"schema_version":"1.0"},"canonical_sha256":"3d15bc35deddfc0ea2fe007744f9edb0c401d84acea8f64e1e001b6d73bce1f6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:19.829285Z","signature_b64":"DyZYP6CsLCJCdFREs10Qlsf79IHyAaKkto5mMgJqgS9ctA3zYUVpfAdn0oFeLlaFiYcBgZXyfpRw3XkqL6GeCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d15bc35deddfc0ea2fe007744f9edb0c401d84acea8f64e1e001b6d73bce1f6","last_reissued_at":"2026-05-18T02:13:19.828801Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:19.828801Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.2856","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":"2026-05-18T02:13:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YnbpAo1s+rBrb8BV7n9a57yMNdEehtGNLj1tfTw4SmbERXM1Dg02FL0JjG0IMCILIMl6YqJrAQwk8dVRYELrAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:59:44.062225Z"},"content_sha256":"ce077d2116df82e98449b93ad5f49de5fb63521fbd031f6c4bfac46084d807f7","schema_version":"1.0","event_id":"sha256:ce077d2116df82e98449b93ad5f49de5fb63521fbd031f6c4bfac46084d807f7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:HUK3YNO63X6A5IX6AB3UJ6PNWD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the mystery of the missing pie in graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"cond-mat.mes-hall","authors_text":"Paola Giacconi, Roberto Soldati","submitted_at":"2009-06-16T07:51:06Z","abstract_excerpt":"We investigate in some detail the structure of the electromagnetic current density for the pseudo-relativistic massless spinor effective model for graphene. It is shown that the pseudo-relativistic massless Dirac field theory in {\\em 2+1} space-time dimensions and in the presence of a constant homogeneous electric field actually leads to the measured current density and to the minimum quantum conductivity."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.2856","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":"2026-05-18T02:13:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EXXShM4Ukq05HNvTJM3piihfEZTXrv6tDMMbB1A8QqAARhfMQ4xjs11cEDGKuHdmVsWAtlxPfAgwA0etIo9BCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:59:44.062593Z"},"content_sha256":"2ce7921de57ad0d610032d8ab1e3a66660219c6a1bd44f388395e494e987abda","schema_version":"1.0","event_id":"sha256:2ce7921de57ad0d610032d8ab1e3a66660219c6a1bd44f388395e494e987abda"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HUK3YNO63X6A5IX6AB3UJ6PNWD/bundle.json","state_url":"https://pith.science/pith/HUK3YNO63X6A5IX6AB3UJ6PNWD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HUK3YNO63X6A5IX6AB3UJ6PNWD/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":"2026-05-28T14:59:44Z","links":{"resolver":"https://pith.science/pith/HUK3YNO63X6A5IX6AB3UJ6PNWD","bundle":"https://pith.science/pith/HUK3YNO63X6A5IX6AB3UJ6PNWD/bundle.json","state":"https://pith.science/pith/HUK3YNO63X6A5IX6AB3UJ6PNWD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HUK3YNO63X6A5IX6AB3UJ6PNWD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:HUK3YNO63X6A5IX6AB3UJ6PNWD","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":"afc8dcf272b77879d11a9cfc4882b6de90af644aa5d7f9c0f33be081c8e35444","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-06-16T07:51:06Z","title_canon_sha256":"a7104340793275f9f5fd621e1227a7a3927efa7b18ff33c9da21f744da116d83"},"schema_version":"1.0","source":{"id":"0906.2856","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.2856","created_at":"2026-05-18T02:13:19Z"},{"alias_kind":"arxiv_version","alias_value":"0906.2856v2","created_at":"2026-05-18T02:13:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.2856","created_at":"2026-05-18T02:13:19Z"},{"alias_kind":"pith_short_12","alias_value":"HUK3YNO63X6A","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"HUK3YNO63X6A5IX6","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"HUK3YNO6","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:2ce7921de57ad0d610032d8ab1e3a66660219c6a1bd44f388395e494e987abda","target":"graph","created_at":"2026-05-18T02:13:19Z","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 investigate in some detail the structure of the electromagnetic current density for the pseudo-relativistic massless spinor effective model for graphene. It is shown that the pseudo-relativistic massless Dirac field theory in {\\em 2+1} space-time dimensions and in the presence of a constant homogeneous electric field actually leads to the measured current density and to the minimum quantum conductivity.","authors_text":"Paola Giacconi, Roberto Soldati","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-06-16T07:51:06Z","title":"On the mystery of the missing pie in graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.2856","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:ce077d2116df82e98449b93ad5f49de5fb63521fbd031f6c4bfac46084d807f7","target":"record","created_at":"2026-05-18T02:13:19Z","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":"afc8dcf272b77879d11a9cfc4882b6de90af644aa5d7f9c0f33be081c8e35444","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-06-16T07:51:06Z","title_canon_sha256":"a7104340793275f9f5fd621e1227a7a3927efa7b18ff33c9da21f744da116d83"},"schema_version":"1.0","source":{"id":"0906.2856","kind":"arxiv","version":2}},"canonical_sha256":"3d15bc35deddfc0ea2fe007744f9edb0c401d84acea8f64e1e001b6d73bce1f6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d15bc35deddfc0ea2fe007744f9edb0c401d84acea8f64e1e001b6d73bce1f6","first_computed_at":"2026-05-18T02:13:19.828801Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:19.828801Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DyZYP6CsLCJCdFREs10Qlsf79IHyAaKkto5mMgJqgS9ctA3zYUVpfAdn0oFeLlaFiYcBgZXyfpRw3XkqL6GeCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:19.829285Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.2856","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce077d2116df82e98449b93ad5f49de5fb63521fbd031f6c4bfac46084d807f7","sha256:2ce7921de57ad0d610032d8ab1e3a66660219c6a1bd44f388395e494e987abda"],"state_sha256":"6414dc2321f663fbee5ef18145bad4c588d3e8052469bea89e35e447023ad51f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Igc8CLWyNmjtGXeh/kE/fVjIwJ5QbCgR6k22RN5gVUEEERsqApbhAlNafbOrvnEj9BUGuZckt7fKqYRfZtXTAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T14:59:44.064496Z","bundle_sha256":"4a55bcef548a506ea8eef964c66de26b189adfffd452d979e10e27dcb77ce4d8"}}