{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:NFCR7K44I4P3XSQD46D6UNR4H3","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":"5bed82c29dc41a887244c0530f8d45f86525e49e12597b756fff2dbdbd008c4d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2009-12-28T10:11:27Z","title_canon_sha256":"4f78fc49ca35d3921c107708dedf05813a0651b5bdc8daa8180b739d9fb1e236"},"schema_version":"1.0","source":{"id":"0912.5147","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.5147","created_at":"2026-05-18T02:10:13Z"},{"alias_kind":"arxiv_version","alias_value":"0912.5147v1","created_at":"2026-05-18T02:10:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.5147","created_at":"2026-05-18T02:10:13Z"},{"alias_kind":"pith_short_12","alias_value":"NFCR7K44I4P3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"NFCR7K44I4P3XSQD","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"NFCR7K44","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:f0cb266e9934c690478b4f094ab716d142b62f7d1c1e4b34715cc5089625aa1f","target":"graph","created_at":"2026-05-18T02:10:13Z","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":"Johnson noise thermometers (JNT) measure the equilibrium electrical noise, proportional to thermodynamic temperature, of a sensing resistor. In the correlation method, the same resistor is connected to two amplifiers and a correlation of their outputs is performed, in order to reject amplifiers' noise. Such rejection is not perfect: the residual correlation gives a systematic error in the JNT reading. In order to put an upper limit, or to achieve a correction, for such error, a careful electrical modelling of the amplifiers and connections must be performed. Standard numerical simulation tools","authors_text":"Luca Callegaro, Marco Pisani, Massimo Ortolano","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2009-12-28T10:11:27Z","title":"Systematic errors in the correlation method for Johnson noise thermometry: residual correlations due to amplifiers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.5147","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":"sha256:4b597599bfd821e1727fc17e72975a0cdaee41cb83723f66c76d272ab9eeb87a","target":"record","created_at":"2026-05-18T02:10:13Z","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":"5bed82c29dc41a887244c0530f8d45f86525e49e12597b756fff2dbdbd008c4d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2009-12-28T10:11:27Z","title_canon_sha256":"4f78fc49ca35d3921c107708dedf05813a0651b5bdc8daa8180b739d9fb1e236"},"schema_version":"1.0","source":{"id":"0912.5147","kind":"arxiv","version":1}},"canonical_sha256":"69451fab9c471fbbca03e787ea363c3eebc8ec601bf70f673754f4a138310624","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69451fab9c471fbbca03e787ea363c3eebc8ec601bf70f673754f4a138310624","first_computed_at":"2026-05-18T02:10:13.486613Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:13.486613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tl+7F6imdlJEErBjlVUX31CAiafYan/VARn2tneXJ7nz7xHlUViQPOuLdbwE7OYGdc6CHPAQrnQ6yX4LQtZyDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:13.487226Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.5147","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b597599bfd821e1727fc17e72975a0cdaee41cb83723f66c76d272ab9eeb87a","sha256:f0cb266e9934c690478b4f094ab716d142b62f7d1c1e4b34715cc5089625aa1f"],"state_sha256":"f585dc6fe031b4770605c674152c4cd28285ba45d7f50614bac7aab5905fb812"}