{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:FNOGPSCM52ACMF2POWWTX5EJZH","short_pith_number":"pith:FNOGPSCM","canonical_record":{"source":{"id":"1211.5552","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-23T16:53:38Z","cross_cats_sorted":["physics.atom-ph","quant-ph"],"title_canon_sha256":"ae394445304441545564d739e42fdb9f01f81064304f97deddffbc4001c4b6fa","abstract_canon_sha256":"cfcc9b0ae879af1d7ccf142b76d7b18658c08f83071414e526fba0839a1b5cde"},"schema_version":"1.0"},"canonical_sha256":"2b5c67c84cee8026174f75ad3bf489c9fcab218df2a0d247dab3edb8fdff8c41","source":{"kind":"arxiv","id":"1211.5552","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5552","created_at":"2026-05-18T01:53:01Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5552v1","created_at":"2026-05-18T01:53:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5552","created_at":"2026-05-18T01:53:01Z"},{"alias_kind":"pith_short_12","alias_value":"FNOGPSCM52AC","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"FNOGPSCM52ACMF2P","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"FNOGPSCM","created_at":"2026-05-18T12:27:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:FNOGPSCM52ACMF2POWWTX5EJZH","target":"record","payload":{"canonical_record":{"source":{"id":"1211.5552","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-23T16:53:38Z","cross_cats_sorted":["physics.atom-ph","quant-ph"],"title_canon_sha256":"ae394445304441545564d739e42fdb9f01f81064304f97deddffbc4001c4b6fa","abstract_canon_sha256":"cfcc9b0ae879af1d7ccf142b76d7b18658c08f83071414e526fba0839a1b5cde"},"schema_version":"1.0"},"canonical_sha256":"2b5c67c84cee8026174f75ad3bf489c9fcab218df2a0d247dab3edb8fdff8c41","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:01.095647Z","signature_b64":"iOLGgh0U097tRD943esoyqIaf0293Cqs5QBfsTdO3PtCjL9PqbqWydbZcmPxHkuutTwAIK3BbpUZJkS+GqQKCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2b5c67c84cee8026174f75ad3bf489c9fcab218df2a0d247dab3edb8fdff8c41","last_reissued_at":"2026-05-18T01:53:01.095194Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:01.095194Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.5552","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":"2026-05-18T01:53:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Vp72/Nm4zt8T9FSbiEU/8A7fawELupvFbESBD1HAj722o7S8Z/xpwkRAIsQ2kIIrgPdYmjA8FVN/QkqclDjCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T00:19:00.273272Z"},"content_sha256":"60b15c880a4ec9f4aa1d8cc4d752ce9177b8c9fbfa51db0ee35ada756c1c636c","schema_version":"1.0","event_id":"sha256:60b15c880a4ec9f4aa1d8cc4d752ce9177b8c9fbfa51db0ee35ada756c1c636c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:FNOGPSCM52ACMF2POWWTX5EJZH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic field controlled vacuum charge in graphene quantum dots with a mass gap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph","quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"H. Aoki, P. A. Maksym","submitted_at":"2012-11-23T16:53:38Z","abstract_excerpt":"The effect of a magnetic field on the charged vacuum is investigated. The field dependence of the energy levels causes jumps in the total vacuum charge that occur whenever an energy level crosses the Fermi level and this leads to re-entrant cycles of vacuum charging and discharging. In atomic systems these effects require astrophysical magnetic fields of around 10^8 T but in graphene with a mass gap they occur in laboratory fields of about 1 T or lower. It is suggested that an electrostatic graphene quantum dot defined by a gate electrode provides a solid state model of the as yet unobserved c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5552","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":"2026-05-18T01:53:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oLsGjReyuNV5hBtLKmP42C2fxlE9Z+/N8WsA5dvJMuvRLefmOR0yY0BHHEUgoNK+uzWa8id3z+bvgh//mZWuAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T00:19:00.273645Z"},"content_sha256":"edb61698e5a496b3314d57811a9b9600ff00341f040940b09936fbdc08913c8b","schema_version":"1.0","event_id":"sha256:edb61698e5a496b3314d57811a9b9600ff00341f040940b09936fbdc08913c8b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FNOGPSCM52ACMF2POWWTX5EJZH/bundle.json","state_url":"https://pith.science/pith/FNOGPSCM52ACMF2POWWTX5EJZH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FNOGPSCM52ACMF2POWWTX5EJZH/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":"2026-06-03T00:19:00Z","links":{"resolver":"https://pith.science/pith/FNOGPSCM52ACMF2POWWTX5EJZH","bundle":"https://pith.science/pith/FNOGPSCM52ACMF2POWWTX5EJZH/bundle.json","state":"https://pith.science/pith/FNOGPSCM52ACMF2POWWTX5EJZH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FNOGPSCM52ACMF2POWWTX5EJZH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:FNOGPSCM52ACMF2POWWTX5EJZH","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":"cfcc9b0ae879af1d7ccf142b76d7b18658c08f83071414e526fba0839a1b5cde","cross_cats_sorted":["physics.atom-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-23T16:53:38Z","title_canon_sha256":"ae394445304441545564d739e42fdb9f01f81064304f97deddffbc4001c4b6fa"},"schema_version":"1.0","source":{"id":"1211.5552","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5552","created_at":"2026-05-18T01:53:01Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5552v1","created_at":"2026-05-18T01:53:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5552","created_at":"2026-05-18T01:53:01Z"},{"alias_kind":"pith_short_12","alias_value":"FNOGPSCM52AC","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"FNOGPSCM52ACMF2P","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"FNOGPSCM","created_at":"2026-05-18T12:27:06Z"}],"graph_snapshots":[{"event_id":"sha256:edb61698e5a496b3314d57811a9b9600ff00341f040940b09936fbdc08913c8b","target":"graph","created_at":"2026-05-18T01:53:01Z","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 effect of a magnetic field on the charged vacuum is investigated. The field dependence of the energy levels causes jumps in the total vacuum charge that occur whenever an energy level crosses the Fermi level and this leads to re-entrant cycles of vacuum charging and discharging. In atomic systems these effects require astrophysical magnetic fields of around 10^8 T but in graphene with a mass gap they occur in laboratory fields of about 1 T or lower. It is suggested that an electrostatic graphene quantum dot defined by a gate electrode provides a solid state model of the as yet unobserved c","authors_text":"H. Aoki, P. A. Maksym","cross_cats":["physics.atom-ph","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-23T16:53:38Z","title":"Magnetic field controlled vacuum charge in graphene quantum dots with a mass gap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5552","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":"sha256:60b15c880a4ec9f4aa1d8cc4d752ce9177b8c9fbfa51db0ee35ada756c1c636c","target":"record","created_at":"2026-05-18T01:53:01Z","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":"cfcc9b0ae879af1d7ccf142b76d7b18658c08f83071414e526fba0839a1b5cde","cross_cats_sorted":["physics.atom-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-23T16:53:38Z","title_canon_sha256":"ae394445304441545564d739e42fdb9f01f81064304f97deddffbc4001c4b6fa"},"schema_version":"1.0","source":{"id":"1211.5552","kind":"arxiv","version":1}},"canonical_sha256":"2b5c67c84cee8026174f75ad3bf489c9fcab218df2a0d247dab3edb8fdff8c41","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2b5c67c84cee8026174f75ad3bf489c9fcab218df2a0d247dab3edb8fdff8c41","first_computed_at":"2026-05-18T01:53:01.095194Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:01.095194Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iOLGgh0U097tRD943esoyqIaf0293Cqs5QBfsTdO3PtCjL9PqbqWydbZcmPxHkuutTwAIK3BbpUZJkS+GqQKCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:01.095647Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.5552","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:60b15c880a4ec9f4aa1d8cc4d752ce9177b8c9fbfa51db0ee35ada756c1c636c","sha256:edb61698e5a496b3314d57811a9b9600ff00341f040940b09936fbdc08913c8b"],"state_sha256":"602671a33bf82bbd90c9f6da9b820609c7ec4fe322bd4006f3fe5fd65f9645d9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G2qchPVYDTBpn3/WDxWqRZeGEYfJoRKR+09CjQGZOhwcY7dpyYTX7NwC5zUETmiS/PnCzxZnLh0xKoJWvSlqCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T00:19:00.275869Z","bundle_sha256":"2a1a7d25bb1f37513afa5dee8a2670ea441d36281c5c7c5eff992e765c8450e2"}}