{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:TDETZI2XRED4TGXHHRULFWVRNT","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":"e10b501f0e822836cf043bfcfdba9c67783250bd9bdfb46538411b6b2bffb9ee","cross_cats_sorted":["hep-th","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2012-03-05T08:58:32Z","title_canon_sha256":"028df6f15776c4b4118e5e03d6c4be52e16c35140340a9488b86b83b1e98c9ce"},"schema_version":"1.0","source":{"id":"1203.0832","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.0832","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"arxiv_version","alias_value":"1203.0832v2","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.0832","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"pith_short_12","alias_value":"TDETZI2XRED4","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TDETZI2XRED4TGXH","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TDETZI2X","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:0c25957e143f5fffae9e6bbdca4ff70e04296f19daea9d395bbaf3d605bef38e","target":"graph","created_at":"2026-05-18T01:04:50Z","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":"The motivation for this article came from an attempt to give an alternative definition for the meter, the SI unit for measuring length. As a starting point towards this goal, in this piece of work we present the underlying theory behind our approach which uses ideas from quantum field theory and noncommutative geometry, in particular the notion of an odd K-cycle which is based on the Dirac operator (and its inverse, the Dirac propagator). Using (the perhaps more familiar) physics terminology, the key point in our strategy is this: instead of measuring length directly in space-time we measure t","authors_text":"Ioannis P. Zois","cross_cats":["hep-th","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2012-03-05T08:58:32Z","title":"Quantum Metrology: Towards an alternative definition for the meter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.0832","kind":"arxiv","version":2},"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":"sha256:45a259176c3aade673363212fa0797ff8ae37093e14c6510102b39b4accaab86","target":"record","created_at":"2026-05-18T01:04:50Z","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":"e10b501f0e822836cf043bfcfdba9c67783250bd9bdfb46538411b6b2bffb9ee","cross_cats_sorted":["hep-th","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2012-03-05T08:58:32Z","title_canon_sha256":"028df6f15776c4b4118e5e03d6c4be52e16c35140340a9488b86b83b1e98c9ce"},"schema_version":"1.0","source":{"id":"1203.0832","kind":"arxiv","version":2}},"canonical_sha256":"98c93ca3578907c99ae73c68b2dab16cf21569bbc4d9a0ef38d4e556871ea434","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"98c93ca3578907c99ae73c68b2dab16cf21569bbc4d9a0ef38d4e556871ea434","first_computed_at":"2026-05-18T01:04:50.935366Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:50.935366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3MG5eVSdpKh8/Ctwp0/1z9zr9swF2CT6+Q5qF4OMXdwoPjjYw4z0R5ORJP31vCpX0BASwTrJP69hJN8NCGlaCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:50.935937Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.0832","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:45a259176c3aade673363212fa0797ff8ae37093e14c6510102b39b4accaab86","sha256:0c25957e143f5fffae9e6bbdca4ff70e04296f19daea9d395bbaf3d605bef38e"],"state_sha256":"6f09cb655d935ed807c606b53f24eb97f405e481bcd68bc4900e3ef9375b5890"}