{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:QUEGT53FK5ZPYFJF5Z56DHJDWY","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":"b707af09a56016f12a375f40771b92a408c33339d8d55e9329cdd8f19be1a89b","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2019-07-15T22:37:39Z","title_canon_sha256":"40b0c88dc46d5cbf341b2bbc09bc419939674e402b3bbb4ccca8523a41f7e58d"},"schema_version":"1.0","source":{"id":"1907.06780","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.06780","created_at":"2026-07-05T00:37:17Z"},{"alias_kind":"arxiv_version","alias_value":"1907.06780v1","created_at":"2026-07-05T00:37:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.06780","created_at":"2026-07-05T00:37:17Z"},{"alias_kind":"pith_short_12","alias_value":"QUEGT53FK5ZP","created_at":"2026-07-05T00:37:17Z"},{"alias_kind":"pith_short_16","alias_value":"QUEGT53FK5ZPYFJF","created_at":"2026-07-05T00:37:17Z"},{"alias_kind":"pith_short_8","alias_value":"QUEGT53F","created_at":"2026-07-05T00:37:17Z"}],"graph_snapshots":[{"event_id":"sha256:b2bfba9b28972eb2518d7fa3c55c330bf7af571d4871686d5fd78e5e69eb165a","target":"graph","created_at":"2026-07-05T00:37:17Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1907.06780/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We develop a geometric framework to describe the thermodynamics of microscopic heat engines driven by slow periodic temperature variations and modulations of a mechanical control parameter. Covering both the classical and the quantum regime, our approach reveals a universal trade-off relation between efficiency and power that follows solely from geometric arguments and holds for any thermodynamically consistent microdynamics. Focusing on Lindblad dynamics, we derive a second bound showing that coherence as a genuine quantum effect inevitably reduces the performance of slow engine cycles regard","authors_text":"Kay Brandner, Keiji Saito","cross_cats":["cond-mat.mes-hall","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2019-07-15T22:37:39Z","title":"Thermodynamic Geometry of Microscopic Heat Engines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.06780","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":"sha256:427fd5a9de6d91136d0130aead61ea0885372a9748ea54b24c5f526f61e9049d","target":"record","created_at":"2026-07-05T00:37:17Z","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":"b707af09a56016f12a375f40771b92a408c33339d8d55e9329cdd8f19be1a89b","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2019-07-15T22:37:39Z","title_canon_sha256":"40b0c88dc46d5cbf341b2bbc09bc419939674e402b3bbb4ccca8523a41f7e58d"},"schema_version":"1.0","source":{"id":"1907.06780","kind":"arxiv","version":1}},"canonical_sha256":"850869f7655772fc1525ee7be19d23b6354cf04e6a5003d39bacf87006c10412","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"850869f7655772fc1525ee7be19d23b6354cf04e6a5003d39bacf87006c10412","first_computed_at":"2026-07-05T00:37:17.196549Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:37:17.196549Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rPXnVTkhAdbdAycVTu7Pzlmu1jbKI8jg3JC4gmVswfBtBMvej9blsbFXdizWEVJiibUp8MVVf8f+drm6oC+9Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:37:17.196969Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.06780","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:427fd5a9de6d91136d0130aead61ea0885372a9748ea54b24c5f526f61e9049d","sha256:b2bfba9b28972eb2518d7fa3c55c330bf7af571d4871686d5fd78e5e69eb165a"],"state_sha256":"22cc1de05eb820e4a2fa82c159b6ad24db8964eb09c7a715c0e6be50df05fc6b"}