{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:MS6RYNQEAQNMY6SKEPHRLZ75ND","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":"5d2f1eceff86104988e0f2d6eeb20ae255e12f7413f749e9677465d0ee0dfee6","cross_cats_sorted":["cond-mat.soft"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2000-08-11T01:52:33Z","title_canon_sha256":"a5231689a21cbba5bdc166e8fd942af69a3903759c082915a506b71b7d4bcc19"},"schema_version":"1.0","source":{"id":"cond-mat/0008176","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0008176","created_at":"2026-05-18T01:07:12Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0008176v1","created_at":"2026-05-18T01:07:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0008176","created_at":"2026-05-18T01:07:12Z"},{"alias_kind":"pith_short_12","alias_value":"MS6RYNQEAQNM","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"MS6RYNQEAQNMY6SK","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"MS6RYNQE","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:2ef6c0d8c6e9415a1e17c84a92a2ed90eef53c972978f2ca8a6b6601b826c173","target":"graph","created_at":"2026-05-18T01:07:12Z","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":"We discuss the reversibility of Brownian heat engine. We perform asymptotic analysis of Kramers equation on B\\\"uttiker-Landauer system and show quantitatively that Carnot efficiency is inattainable even in a fully overdamping limit. The inattainability is attributed to the inevitable irreversible heat flow over the temperature boundary.","authors_text":"Ken Sekimoto, Tsuyoshi Hondou","cross_cats":["cond-mat.soft"],"headline":"","license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2000-08-11T01:52:33Z","title":"Inattainability of Carnot efficiency in the Brownian heat engine"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0008176","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:cfa68c220c6aeb90a5bbb6f6faad657d7d96e697b0fea34cf6480784f74de432","target":"record","created_at":"2026-05-18T01:07:12Z","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":"5d2f1eceff86104988e0f2d6eeb20ae255e12f7413f749e9677465d0ee0dfee6","cross_cats_sorted":["cond-mat.soft"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2000-08-11T01:52:33Z","title_canon_sha256":"a5231689a21cbba5bdc166e8fd942af69a3903759c082915a506b71b7d4bcc19"},"schema_version":"1.0","source":{"id":"cond-mat/0008176","kind":"arxiv","version":1}},"canonical_sha256":"64bd1c3604041acc7a4a23cf15e7fd68e2e1a09b529c5b3990abbb5c62ee3172","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64bd1c3604041acc7a4a23cf15e7fd68e2e1a09b529c5b3990abbb5c62ee3172","first_computed_at":"2026-05-18T01:07:12.753558Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:12.753558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P986xsAezO447pbwPJaKkC/FnMjOeOEsW6SiW1DvS3EWKqq5TucxAcMh0pjIYj3EKmg7pdAGI/8AecKe8CtAAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:12.754159Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0008176","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cfa68c220c6aeb90a5bbb6f6faad657d7d96e697b0fea34cf6480784f74de432","sha256:2ef6c0d8c6e9415a1e17c84a92a2ed90eef53c972978f2ca8a6b6601b826c173"],"state_sha256":"bd380a983382ef08ebea9d446d00fc7dd4fb677ed2ac1d010211b04d3b25e9a2"}