{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:KBBQ5U7L6UPY7JHZXUF3TKC5QV","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":"a1907fbfea48d434039e35ccac454120f18bd7717ff0e18dfa8ce10967e5d7c0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-02-22T17:25:41Z","title_canon_sha256":"3507dd7e44097e1e8dee1c909fe24ebf1ec884a949f9431e84d65c21b382dc6d"},"schema_version":"1.0","source":{"id":"1202.4978","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4978","created_at":"2026-05-18T03:50:09Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4978v2","created_at":"2026-05-18T03:50:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4978","created_at":"2026-05-18T03:50:09Z"},{"alias_kind":"pith_short_12","alias_value":"KBBQ5U7L6UPY","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"KBBQ5U7L6UPY7JHZ","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"KBBQ5U7L","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:a21e4e14e75ed00d4b0c6a8b00cf4765169f9cd30b8d5c6ae20e1ddcd9d93825","target":"graph","created_at":"2026-05-18T03:50:09Z","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":"Cooper pairing of spatially separated electrons and holes in graphene bilayer is studied beyond the mean-field approximation. Suppression of the screening at large distances, caused by appearance of the gap, is considered self-consistently. A mutual positive feedback between appearance of the gap and enlargement of the interaction leads to a sharp transition to correlated state with greatly increased gap above some critical value of the coupling strength. At coupling strength below the critical, this correlation effect increases the gap approximately by a factor of two. The maximal coupling st","authors_text":"A. A. Sokolik, S. L. Ogarkov, Yu. E. Lozovik","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-02-22T17:25:41Z","title":"Cooper pairing of electrons and holes in graphene bilayer: Correlation effects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4978","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":"sha256:996a27cb4e584c070661541ad56a5d6d428c4fe3c158b5e97abc917392a177f9","target":"record","created_at":"2026-05-18T03:50:09Z","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":"a1907fbfea48d434039e35ccac454120f18bd7717ff0e18dfa8ce10967e5d7c0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-02-22T17:25:41Z","title_canon_sha256":"3507dd7e44097e1e8dee1c909fe24ebf1ec884a949f9431e84d65c21b382dc6d"},"schema_version":"1.0","source":{"id":"1202.4978","kind":"arxiv","version":2}},"canonical_sha256":"50430ed3ebf51f8fa4f9bd0bb9a85d856ee1fe9c2e31b35d9287869d07dc53a8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"50430ed3ebf51f8fa4f9bd0bb9a85d856ee1fe9c2e31b35d9287869d07dc53a8","first_computed_at":"2026-05-18T03:50:09.091279Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:50:09.091279Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8Icmt6f+90rZoS2uFPiS5ZkOerXYvQbETxLKNx3uoTwIRTC/iWvJ/xMjmhMGQ0SjPT2I9XKkipPS5rQr+IvRAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:50:09.091998Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.4978","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:996a27cb4e584c070661541ad56a5d6d428c4fe3c158b5e97abc917392a177f9","sha256:a21e4e14e75ed00d4b0c6a8b00cf4765169f9cd30b8d5c6ae20e1ddcd9d93825"],"state_sha256":"bda05fa0edd2082dccdb5502ea32092b35369885a518fff685ebe6e41b8b62ff"}