{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:VHGUOLQJENEMD6OCKN4H7XCF3W","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":"bcf98776b877f047901d21f93440209bed59e8793a611af994e1b8ba9a654d27","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-01-22T16:17:31Z","title_canon_sha256":"969521e3ce4feb18ee235c9ff4a8042b788d1298a5295c69372c651665685d43"},"schema_version":"1.0","source":{"id":"2201.09092","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.09092","created_at":"2026-07-05T03:53:16Z"},{"alias_kind":"arxiv_version","alias_value":"2201.09092v1","created_at":"2026-07-05T03:53:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.09092","created_at":"2026-07-05T03:53:16Z"},{"alias_kind":"pith_short_12","alias_value":"VHGUOLQJENEM","created_at":"2026-07-05T03:53:16Z"},{"alias_kind":"pith_short_16","alias_value":"VHGUOLQJENEMD6OC","created_at":"2026-07-05T03:53:16Z"},{"alias_kind":"pith_short_8","alias_value":"VHGUOLQJ","created_at":"2026-07-05T03:53:16Z"}],"graph_snapshots":[{"event_id":"sha256:69121f77bbf1658022f2a140aef4bb78ca08604f8b72a134034c35794c6348f6","target":"graph","created_at":"2026-07-05T03:53:16Z","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/2201.09092/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Dynamic Nuclear Polarization (DNP) presently stands as the preferred strategy to enhance the sensitivity of nuclear magnetic resonance measurements, but its application relies on the use of high-frequency microwave to manipulate electron spins, an increasingly demanding task as the applied magnetic field grows. Here we investigate the dynamics of a system hosting a polarizing agent formed by two distinct paramagnetic centers near a level anti-crossing. We theoretically show that nuclear spins polarize efficiently under a cyclic protocol that combines alternating thermal jumps and radio-frequen","authors_text":"Carlos A. Meriles, Pablo R. Zangara","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-01-22T16:17:31Z","title":"Microwave-free dynamic nuclear polarization via sudden thermal jumps"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.09092","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":"sha256:5c3259288c6eba995ed2403cbb496e865b92a97305c9ec0690579f5e6c341124","target":"record","created_at":"2026-07-05T03:53:16Z","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":"bcf98776b877f047901d21f93440209bed59e8793a611af994e1b8ba9a654d27","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-01-22T16:17:31Z","title_canon_sha256":"969521e3ce4feb18ee235c9ff4a8042b788d1298a5295c69372c651665685d43"},"schema_version":"1.0","source":{"id":"2201.09092","kind":"arxiv","version":1}},"canonical_sha256":"a9cd472e092348c1f9c253787fdc45dd993214d971571b6e356886fa7d397649","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a9cd472e092348c1f9c253787fdc45dd993214d971571b6e356886fa7d397649","first_computed_at":"2026-07-05T03:53:16.980184Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:53:16.980184Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+JXVtnmsz+9jEqRswSN+L31kdftUzLzK5drqe9d7mLy63AXqMamw+smSFHEPIdZ4qiFrZR3Pp9VIcO8/99lXBg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:53:16.980593Z","signed_message":"canonical_sha256_bytes"},"source_id":"2201.09092","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5c3259288c6eba995ed2403cbb496e865b92a97305c9ec0690579f5e6c341124","sha256:69121f77bbf1658022f2a140aef4bb78ca08604f8b72a134034c35794c6348f6"],"state_sha256":"8f3709b239a4f4c0da6dea23dab5030af2e9a3e0b87f8b818076e2ef10e8383b"}