{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:SII5JUBKN7KTYLOB6QHQN2FKOR","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":"69bdcc221e8846098ac4674f72f971584ad9b98639bc1e3be1bcf9c46e719ed2","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-04-19T22:47:51Z","title_canon_sha256":"e6386ffa81765c131704ee3cf66932e811117639e6834c3eab6b764d04ffc8a7"},"schema_version":"1.0","source":{"id":"0704.2611","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0704.2611","created_at":"2026-05-18T01:23:12Z"},{"alias_kind":"arxiv_version","alias_value":"0704.2611v1","created_at":"2026-05-18T01:23:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0704.2611","created_at":"2026-05-18T01:23:12Z"},{"alias_kind":"pith_short_12","alias_value":"SII5JUBKN7KT","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"SII5JUBKN7KTYLOB","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"SII5JUBK","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:fbe4528e59705c06827dedfa27e60b4cc50f4da014c250625a65eaea184a8cf8","target":"graph","created_at":"2026-05-18T01:23:12Z","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":"I suggest to use the effect of Coulomb drag between two closely positioned graphite monolayers (graphene sheets) for experimental measurement of the strength of weak non-linearities of the spectrum in graphene. I consider trigonal warping as a representative mechanism responsible for the drag effect. Since graphene is relatively defect-free, I evaluate the drag conductivity in the ballistic regime and find that it is proportional to the fourth power of the warping strength.","authors_text":"B.N. Narozhny","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-04-19T22:47:51Z","title":"Coulomb drag as a measure of trigonal warping in doped graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.2611","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":"sha256:088dc9252a3b5ed1bf60399065d275ad15c302a72b8bf84c4447f0c4308d6ca9","target":"record","created_at":"2026-05-18T01:23:12Z","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":"69bdcc221e8846098ac4674f72f971584ad9b98639bc1e3be1bcf9c46e719ed2","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-04-19T22:47:51Z","title_canon_sha256":"e6386ffa81765c131704ee3cf66932e811117639e6834c3eab6b764d04ffc8a7"},"schema_version":"1.0","source":{"id":"0704.2611","kind":"arxiv","version":1}},"canonical_sha256":"9211d4d02a6fd53c2dc1f40f06e8aa747111ba1cab9b57c62c1757c7b22fa929","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9211d4d02a6fd53c2dc1f40f06e8aa747111ba1cab9b57c62c1757c7b22fa929","first_computed_at":"2026-05-18T01:23:12.821861Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:23:12.821861Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o+Us3NvZu1/EL7Ef489S8d1d/p8T5jXC64bnaFPttmsrnDadqC0DlzDM8oNzR/g9h4v6jhsCYzXOo3UIaGmlCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:23:12.822561Z","signed_message":"canonical_sha256_bytes"},"source_id":"0704.2611","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:088dc9252a3b5ed1bf60399065d275ad15c302a72b8bf84c4447f0c4308d6ca9","sha256:fbe4528e59705c06827dedfa27e60b4cc50f4da014c250625a65eaea184a8cf8"],"state_sha256":"23faa0d3f99bf68b84df4571773089c5586cb67c079340f582ece0ea3507d653"}