{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:R5P34GMDGJ32PA7ZC3VILXSYY4","short_pith_number":"pith:R5P34GMD","canonical_record":{"source":{"id":"1903.10845","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-26T13:00:13Z","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"title_canon_sha256":"3788f527d5b5b4cc83c65c35b80550116e446550a4212bf7b72cf57b64e3ab0d","abstract_canon_sha256":"b225acc7e07735affae1124f7e07ab2f6d499f0debb2059dd1fb291436566cbd"},"schema_version":"1.0"},"canonical_sha256":"8f5fbe19833277a783f916ea85de58c71410b47c3f7060c599ac3ce79f6496f6","source":{"kind":"arxiv","id":"1903.10845","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.10845","created_at":"2026-05-17T23:42:20Z"},{"alias_kind":"arxiv_version","alias_value":"1903.10845v1","created_at":"2026-05-17T23:42:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.10845","created_at":"2026-05-17T23:42:20Z"},{"alias_kind":"pith_short_12","alias_value":"R5P34GMDGJ32","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"R5P34GMDGJ32PA7Z","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"R5P34GMD","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:R5P34GMDGJ32PA7ZC3VILXSYY4","target":"record","payload":{"canonical_record":{"source":{"id":"1903.10845","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-26T13:00:13Z","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"title_canon_sha256":"3788f527d5b5b4cc83c65c35b80550116e446550a4212bf7b72cf57b64e3ab0d","abstract_canon_sha256":"b225acc7e07735affae1124f7e07ab2f6d499f0debb2059dd1fb291436566cbd"},"schema_version":"1.0"},"canonical_sha256":"8f5fbe19833277a783f916ea85de58c71410b47c3f7060c599ac3ce79f6496f6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:20.340498Z","signature_b64":"CpRo3X0srwNVlxfcG+KfbQGKAY+Cf7QRf73LGrOBerR2LESI7rmSjOoxVs51iPGlJctzfwUEJd+wpwQbim/MBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8f5fbe19833277a783f916ea85de58c71410b47c3f7060c599ac3ce79f6496f6","last_reissued_at":"2026-05-17T23:42:20.339949Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:20.339949Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.10845","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:42:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XfAEzm6+wtxYhtnsWfbAnJpn3KFrH5EHfBFjUxuoLDsZQn7CD44u6Nq0O/XzP22By8622jiEDW7nkmaxZYaNBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:03:03.840897Z"},"content_sha256":"ee9f20e52e9f87846fe0bf6be39d0724c6471e763f5f5f1e745bebf93beec53c","schema_version":"1.0","event_id":"sha256:ee9f20e52e9f87846fe0bf6be39d0724c6471e763f5f5f1e745bebf93beec53c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:R5P34GMDGJ32PA7ZC3VILXSYY4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-Stroke Optimization Scheme for Mesoscopic Refrigerators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech","quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Christian Flindt, Kay Brandner, Paul Menczel, Tuomas Pyh\\\"aranta","submitted_at":"2019-03-26T13:00:13Z","abstract_excerpt":"Refrigerators use a thermodynamic cycle to move thermal energy from a cold reservoir to a hot one. Implementing this operation principle with mesoscopic components has recently emerged as a promising strategy to control heat currents in micro and nano systems for quantum technological applications. Here, we combine concepts from stochastic and quantum thermodynamics with advanced methods of optimal control theory to develop a universal optimization scheme for such small-scale refrigerators. Covering both the classical and the quantum regime, our theoretical framework provides a rigorous proced"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.10845","kind":"arxiv","version":1},"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":"2026-05-17T23:42:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gr8BxJphxbXwwYB1wGNEtPKea2NEUFeTJswUQBPQsHb42yAYoJa3ikYxpZiRBbAI3AkvykJsBlPJivNJV25bDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:03:03.841551Z"},"content_sha256":"9b74c0955a7b5d120d953232fb5b7173757273ff455b116f12b46d537188babb","schema_version":"1.0","event_id":"sha256:9b74c0955a7b5d120d953232fb5b7173757273ff455b116f12b46d537188babb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R5P34GMDGJ32PA7ZC3VILXSYY4/bundle.json","state_url":"https://pith.science/pith/R5P34GMDGJ32PA7ZC3VILXSYY4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R5P34GMDGJ32PA7ZC3VILXSYY4/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":"2026-05-25T18:03:03Z","links":{"resolver":"https://pith.science/pith/R5P34GMDGJ32PA7ZC3VILXSYY4","bundle":"https://pith.science/pith/R5P34GMDGJ32PA7ZC3VILXSYY4/bundle.json","state":"https://pith.science/pith/R5P34GMDGJ32PA7ZC3VILXSYY4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R5P34GMDGJ32PA7ZC3VILXSYY4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:R5P34GMDGJ32PA7ZC3VILXSYY4","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":"b225acc7e07735affae1124f7e07ab2f6d499f0debb2059dd1fb291436566cbd","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-26T13:00:13Z","title_canon_sha256":"3788f527d5b5b4cc83c65c35b80550116e446550a4212bf7b72cf57b64e3ab0d"},"schema_version":"1.0","source":{"id":"1903.10845","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.10845","created_at":"2026-05-17T23:42:20Z"},{"alias_kind":"arxiv_version","alias_value":"1903.10845v1","created_at":"2026-05-17T23:42:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.10845","created_at":"2026-05-17T23:42:20Z"},{"alias_kind":"pith_short_12","alias_value":"R5P34GMDGJ32","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"R5P34GMDGJ32PA7Z","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"R5P34GMD","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:9b74c0955a7b5d120d953232fb5b7173757273ff455b116f12b46d537188babb","target":"graph","created_at":"2026-05-17T23:42:20Z","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":"Refrigerators use a thermodynamic cycle to move thermal energy from a cold reservoir to a hot one. Implementing this operation principle with mesoscopic components has recently emerged as a promising strategy to control heat currents in micro and nano systems for quantum technological applications. Here, we combine concepts from stochastic and quantum thermodynamics with advanced methods of optimal control theory to develop a universal optimization scheme for such small-scale refrigerators. Covering both the classical and the quantum regime, our theoretical framework provides a rigorous proced","authors_text":"Christian Flindt, Kay Brandner, Paul Menczel, Tuomas Pyh\\\"aranta","cross_cats":["cond-mat.stat-mech","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-26T13:00:13Z","title":"Two-Stroke Optimization Scheme for Mesoscopic Refrigerators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.10845","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:ee9f20e52e9f87846fe0bf6be39d0724c6471e763f5f5f1e745bebf93beec53c","target":"record","created_at":"2026-05-17T23:42:20Z","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":"b225acc7e07735affae1124f7e07ab2f6d499f0debb2059dd1fb291436566cbd","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-03-26T13:00:13Z","title_canon_sha256":"3788f527d5b5b4cc83c65c35b80550116e446550a4212bf7b72cf57b64e3ab0d"},"schema_version":"1.0","source":{"id":"1903.10845","kind":"arxiv","version":1}},"canonical_sha256":"8f5fbe19833277a783f916ea85de58c71410b47c3f7060c599ac3ce79f6496f6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8f5fbe19833277a783f916ea85de58c71410b47c3f7060c599ac3ce79f6496f6","first_computed_at":"2026-05-17T23:42:20.339949Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:20.339949Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CpRo3X0srwNVlxfcG+KfbQGKAY+Cf7QRf73LGrOBerR2LESI7rmSjOoxVs51iPGlJctzfwUEJd+wpwQbim/MBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:20.340498Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.10845","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ee9f20e52e9f87846fe0bf6be39d0724c6471e763f5f5f1e745bebf93beec53c","sha256:9b74c0955a7b5d120d953232fb5b7173757273ff455b116f12b46d537188babb"],"state_sha256":"a005475a94504b5cc6d7e5aca1c8064ffbfa2f7ef3c9c60b280f51e2105fcf88"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XWBVmMaEab46HI3AQqeGRmfz5xVDuVgFO+73AARqViVNr7iIrtalZzjiOeqd/XZ06WcqWxQtJXtU2MfxG58vBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:03:03.845231Z","bundle_sha256":"4f6ace5bf9160ebf733ee3efd421513ea06c5ec8231239f10159a87db3593bd0"}}