{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:FX2ZD2W4LYFZWKX7PUCIWDRWUH","short_pith_number":"pith:FX2ZD2W4","canonical_record":{"source":{"id":"1807.01275","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-03T16:51:46Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"309add7365ec97337e8f692b88983e5334a6bad1fe425ab0bff04e41291afa73","abstract_canon_sha256":"e9890a32ac06ba7d834df2f00762bc01662f48b170ba65b2597d7370bb8e20dd"},"schema_version":"1.0"},"canonical_sha256":"2df591eadc5e0b9b2aff7d048b0e36a1e5b94b2d932069b242bb6c8fcdeaa274","source":{"kind":"arxiv","id":"1807.01275","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01275","created_at":"2026-05-17T23:56:03Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01275v2","created_at":"2026-05-17T23:56:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01275","created_at":"2026-05-17T23:56:03Z"},{"alias_kind":"pith_short_12","alias_value":"FX2ZD2W4LYFZ","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"FX2ZD2W4LYFZWKX7","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"FX2ZD2W4","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:FX2ZD2W4LYFZWKX7PUCIWDRWUH","target":"record","payload":{"canonical_record":{"source":{"id":"1807.01275","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-03T16:51:46Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"309add7365ec97337e8f692b88983e5334a6bad1fe425ab0bff04e41291afa73","abstract_canon_sha256":"e9890a32ac06ba7d834df2f00762bc01662f48b170ba65b2597d7370bb8e20dd"},"schema_version":"1.0"},"canonical_sha256":"2df591eadc5e0b9b2aff7d048b0e36a1e5b94b2d932069b242bb6c8fcdeaa274","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:03.928665Z","signature_b64":"djHF0cGgqvz/OevIleJ6mX+tJQlTGHkE8HTPzz3p6g0QvngGerp9iCyb0A6TEC6+ZjXIpFCSswJ+vWwtcilaDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2df591eadc5e0b9b2aff7d048b0e36a1e5b94b2d932069b242bb6c8fcdeaa274","last_reissued_at":"2026-05-17T23:56:03.928118Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:03.928118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.01275","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":"2026-05-17T23:56:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WHKqzzGJp8EEBzEadCb6zR9v5QRSxsrFOnY1/qttg/+VdkBIQ/NlTJmxgwiXrmT4EEFWW8S3vxE1KsvmP5NWDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T11:50:12.244963Z"},"content_sha256":"7ec9b1b88ffd333ce7bc20a81fd781a95b4f30118df9a3e1e364f2c0e2ed1395","schema_version":"1.0","event_id":"sha256:7ec9b1b88ffd333ce7bc20a81fd781a95b4f30118df9a3e1e364f2c0e2ed1395"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:FX2ZD2W4LYFZWKX7PUCIWDRWUH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Kohn-Luttinger Superconductivity in Twisted Bilayer Graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.mes-hall","authors_text":"J. Gonz\\'alez, T. Stauber","submitted_at":"2018-07-03T16:51:46Z","abstract_excerpt":"We show that the recently observed superconductivity in twisted bilayer graphene (TBG) can be explained as a consequence of the Kohn-Luttinger (KL) instability which leads to an effective attraction between electrons with originally repulsive interaction. Usually, the KL instability takes place at extremely low energy scales, but in TBG, a doubling and subsequent strong coupling of the van Hove singularities (vHS) in the electronic spectrum occurs as the magic angle is approached, leading to extended saddle points in the highest valence band (VB) with almost perfect nesting between states belo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01275","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":"2026-05-17T23:56:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vW+cM4ZeF9qa42r0Pde4BwSFtjKibmD5woyVI4jAxbIMYBiTl3RC9D892DNsFlHx5Ex93vP4mEtSmAcnmaDFDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T11:50:12.245332Z"},"content_sha256":"cceeaa81e4fb32b64b40c6cd80f29e322d295b7ceb5f746999cc2950034d4ef9","schema_version":"1.0","event_id":"sha256:cceeaa81e4fb32b64b40c6cd80f29e322d295b7ceb5f746999cc2950034d4ef9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FX2ZD2W4LYFZWKX7PUCIWDRWUH/bundle.json","state_url":"https://pith.science/pith/FX2ZD2W4LYFZWKX7PUCIWDRWUH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FX2ZD2W4LYFZWKX7PUCIWDRWUH/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":"2026-07-02T11:50:12Z","links":{"resolver":"https://pith.science/pith/FX2ZD2W4LYFZWKX7PUCIWDRWUH","bundle":"https://pith.science/pith/FX2ZD2W4LYFZWKX7PUCIWDRWUH/bundle.json","state":"https://pith.science/pith/FX2ZD2W4LYFZWKX7PUCIWDRWUH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FX2ZD2W4LYFZWKX7PUCIWDRWUH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:FX2ZD2W4LYFZWKX7PUCIWDRWUH","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":"e9890a32ac06ba7d834df2f00762bc01662f48b170ba65b2597d7370bb8e20dd","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-03T16:51:46Z","title_canon_sha256":"309add7365ec97337e8f692b88983e5334a6bad1fe425ab0bff04e41291afa73"},"schema_version":"1.0","source":{"id":"1807.01275","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01275","created_at":"2026-05-17T23:56:03Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01275v2","created_at":"2026-05-17T23:56:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01275","created_at":"2026-05-17T23:56:03Z"},{"alias_kind":"pith_short_12","alias_value":"FX2ZD2W4LYFZ","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"FX2ZD2W4LYFZWKX7","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"FX2ZD2W4","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:cceeaa81e4fb32b64b40c6cd80f29e322d295b7ceb5f746999cc2950034d4ef9","target":"graph","created_at":"2026-05-17T23:56:03Z","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 show that the recently observed superconductivity in twisted bilayer graphene (TBG) can be explained as a consequence of the Kohn-Luttinger (KL) instability which leads to an effective attraction between electrons with originally repulsive interaction. Usually, the KL instability takes place at extremely low energy scales, but in TBG, a doubling and subsequent strong coupling of the van Hove singularities (vHS) in the electronic spectrum occurs as the magic angle is approached, leading to extended saddle points in the highest valence band (VB) with almost perfect nesting between states belo","authors_text":"J. Gonz\\'alez, T. Stauber","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-03T16:51:46Z","title":"Kohn-Luttinger Superconductivity in Twisted Bilayer Graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01275","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":"sha256:7ec9b1b88ffd333ce7bc20a81fd781a95b4f30118df9a3e1e364f2c0e2ed1395","target":"record","created_at":"2026-05-17T23:56:03Z","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":"e9890a32ac06ba7d834df2f00762bc01662f48b170ba65b2597d7370bb8e20dd","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-03T16:51:46Z","title_canon_sha256":"309add7365ec97337e8f692b88983e5334a6bad1fe425ab0bff04e41291afa73"},"schema_version":"1.0","source":{"id":"1807.01275","kind":"arxiv","version":2}},"canonical_sha256":"2df591eadc5e0b9b2aff7d048b0e36a1e5b94b2d932069b242bb6c8fcdeaa274","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2df591eadc5e0b9b2aff7d048b0e36a1e5b94b2d932069b242bb6c8fcdeaa274","first_computed_at":"2026-05-17T23:56:03.928118Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:03.928118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"djHF0cGgqvz/OevIleJ6mX+tJQlTGHkE8HTPzz3p6g0QvngGerp9iCyb0A6TEC6+ZjXIpFCSswJ+vWwtcilaDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:03.928665Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.01275","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ec9b1b88ffd333ce7bc20a81fd781a95b4f30118df9a3e1e364f2c0e2ed1395","sha256:cceeaa81e4fb32b64b40c6cd80f29e322d295b7ceb5f746999cc2950034d4ef9"],"state_sha256":"5b02de2ed4c48ba05bb1bf87eef1e20358327026516157dd0e8505ffeee905a0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dvE92a7T+8YE4jcoTDm4Be5tEL1i4u3U4hiHHWFlT7icj26hKIsBz8wrajCFD8FGqVeDE6kjimrfixBOr3qMCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T11:50:12.247188Z","bundle_sha256":"b77883fa90ebd6e718b57252378421cfe9ff33a7d39ac8b9edd9322ff94bc278"}}