{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:RHFIDYFIJQTRYL55JB56HDYDBI","short_pith_number":"pith:RHFIDYFI","canonical_record":{"source":{"id":"1203.3594","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-03-16T01:01:18Z","cross_cats_sorted":[],"title_canon_sha256":"166ad1d2afa49d0907e533f8c2d76fbfe93a1dd7f6e07a4f7fa8fab0d14038fa","abstract_canon_sha256":"10ab6107b848a03494bc06a550ff2c09075909c1f4fc1dfb03dea84cab650605"},"schema_version":"1.0"},"canonical_sha256":"89ca81e0a84c271c2fbd487be38f030a1959fd1c20ddce5e74d68dc9b6598da4","source":{"kind":"arxiv","id":"1203.3594","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.3594","created_at":"2026-05-18T03:55:11Z"},{"alias_kind":"arxiv_version","alias_value":"1203.3594v1","created_at":"2026-05-18T03:55:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.3594","created_at":"2026-05-18T03:55:11Z"},{"alias_kind":"pith_short_12","alias_value":"RHFIDYFIJQTR","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RHFIDYFIJQTRYL55","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RHFIDYFI","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:RHFIDYFIJQTRYL55JB56HDYDBI","target":"record","payload":{"canonical_record":{"source":{"id":"1203.3594","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-03-16T01:01:18Z","cross_cats_sorted":[],"title_canon_sha256":"166ad1d2afa49d0907e533f8c2d76fbfe93a1dd7f6e07a4f7fa8fab0d14038fa","abstract_canon_sha256":"10ab6107b848a03494bc06a550ff2c09075909c1f4fc1dfb03dea84cab650605"},"schema_version":"1.0"},"canonical_sha256":"89ca81e0a84c271c2fbd487be38f030a1959fd1c20ddce5e74d68dc9b6598da4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:55:11.957394Z","signature_b64":"ADKMvp6xg9KtJaRw26BLio5+3Bm4RkcdkRByZF2IMI9tSbwpvPG4zLRKHX86raaMmUQ5nyhTopHVxjfX5yFGAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"89ca81e0a84c271c2fbd487be38f030a1959fd1c20ddce5e74d68dc9b6598da4","last_reissued_at":"2026-05-18T03:55:11.956977Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:55:11.956977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.3594","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":"2026-05-18T03:55:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LDV2zyJsHisq8h9ogZQsbsjD1UOF0tRv8h4+HHrVX7/NEo7JvIaO2I5WMie2spShQBMIV0G8gPNrOdjxredcDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T17:33:35.105463Z"},"content_sha256":"bc2f825a68845ee601c87e16363c84c016e61c250ec41646aef445bd03793a8b","schema_version":"1.0","event_id":"sha256:bc2f825a68845ee601c87e16363c84c016e61c250ec41646aef445bd03793a8b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:RHFIDYFIJQTRYL55JB56HDYDBI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interaction-Enhanced Coherence Between Two-Dimensional Dirac Layers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. H. MacDonald, D. A. Pesin, Inti Sodemann","submitted_at":"2012-03-16T01:01:18Z","abstract_excerpt":"We estimate the strength of interaction-enhanced coherence between two graphene or topological insulator surface-state layers by solving imaginary-axis gap equations in the random phase approximation. Using a self-consistent treatment of dynamic screening of Coulomb interactions in the gapped phase, we show that the excitonic gap can reach values on the order of the Fermi energy at strong interactions. The gap is discontinuous as a function of interlayer separation and effective fine structure constant, revealing a first order phase transition between effectively incoherent and interlayer cohe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3594","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":"2026-05-18T03:55:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pQJuug5lN0KVTQoi1JtLPIshpsDs9WEeQsEx3OZdu+ndPHvSqilRp2ZIzvKfNH6DdxRxe3UZ9E5lNIK6ruqyCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T17:33:35.106123Z"},"content_sha256":"b7b60e3b81b4e48ca70d1903a9d0bd2acbb53a22500b28c99fed06cff52ef3c8","schema_version":"1.0","event_id":"sha256:b7b60e3b81b4e48ca70d1903a9d0bd2acbb53a22500b28c99fed06cff52ef3c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RHFIDYFIJQTRYL55JB56HDYDBI/bundle.json","state_url":"https://pith.science/pith/RHFIDYFIJQTRYL55JB56HDYDBI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RHFIDYFIJQTRYL55JB56HDYDBI/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":"2026-05-23T17:33:35Z","links":{"resolver":"https://pith.science/pith/RHFIDYFIJQTRYL55JB56HDYDBI","bundle":"https://pith.science/pith/RHFIDYFIJQTRYL55JB56HDYDBI/bundle.json","state":"https://pith.science/pith/RHFIDYFIJQTRYL55JB56HDYDBI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RHFIDYFIJQTRYL55JB56HDYDBI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:RHFIDYFIJQTRYL55JB56HDYDBI","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":"10ab6107b848a03494bc06a550ff2c09075909c1f4fc1dfb03dea84cab650605","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-03-16T01:01:18Z","title_canon_sha256":"166ad1d2afa49d0907e533f8c2d76fbfe93a1dd7f6e07a4f7fa8fab0d14038fa"},"schema_version":"1.0","source":{"id":"1203.3594","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.3594","created_at":"2026-05-18T03:55:11Z"},{"alias_kind":"arxiv_version","alias_value":"1203.3594v1","created_at":"2026-05-18T03:55:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.3594","created_at":"2026-05-18T03:55:11Z"},{"alias_kind":"pith_short_12","alias_value":"RHFIDYFIJQTR","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RHFIDYFIJQTRYL55","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RHFIDYFI","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:b7b60e3b81b4e48ca70d1903a9d0bd2acbb53a22500b28c99fed06cff52ef3c8","target":"graph","created_at":"2026-05-18T03:55:11Z","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 estimate the strength of interaction-enhanced coherence between two graphene or topological insulator surface-state layers by solving imaginary-axis gap equations in the random phase approximation. Using a self-consistent treatment of dynamic screening of Coulomb interactions in the gapped phase, we show that the excitonic gap can reach values on the order of the Fermi energy at strong interactions. The gap is discontinuous as a function of interlayer separation and effective fine structure constant, revealing a first order phase transition between effectively incoherent and interlayer cohe","authors_text":"A. H. MacDonald, D. A. Pesin, Inti Sodemann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-03-16T01:01:18Z","title":"Interaction-Enhanced Coherence Between Two-Dimensional Dirac Layers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3594","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:bc2f825a68845ee601c87e16363c84c016e61c250ec41646aef445bd03793a8b","target":"record","created_at":"2026-05-18T03:55:11Z","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":"10ab6107b848a03494bc06a550ff2c09075909c1f4fc1dfb03dea84cab650605","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-03-16T01:01:18Z","title_canon_sha256":"166ad1d2afa49d0907e533f8c2d76fbfe93a1dd7f6e07a4f7fa8fab0d14038fa"},"schema_version":"1.0","source":{"id":"1203.3594","kind":"arxiv","version":1}},"canonical_sha256":"89ca81e0a84c271c2fbd487be38f030a1959fd1c20ddce5e74d68dc9b6598da4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"89ca81e0a84c271c2fbd487be38f030a1959fd1c20ddce5e74d68dc9b6598da4","first_computed_at":"2026-05-18T03:55:11.956977Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:55:11.956977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ADKMvp6xg9KtJaRw26BLio5+3Bm4RkcdkRByZF2IMI9tSbwpvPG4zLRKHX86raaMmUQ5nyhTopHVxjfX5yFGAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:55:11.957394Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.3594","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc2f825a68845ee601c87e16363c84c016e61c250ec41646aef445bd03793a8b","sha256:b7b60e3b81b4e48ca70d1903a9d0bd2acbb53a22500b28c99fed06cff52ef3c8"],"state_sha256":"32c7689a8abebea6725f7db8fae8bfc0705e48deec866e5f4b133944a586cfdf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sDOHiRTXnxnIa1BM8jGvU6TRmpNQ+nYrbjJkfPexv9OUk8RzL1NKHqmxs6gtnEN/JjSYcTrwkZj4Hj/40TtxAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T17:33:35.109722Z","bundle_sha256":"191e61f6dd28ffe97eef7bd5ec4cd9ca0a0c8b4a7483eb686db9f72626cf071e"}}