{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:T2ZI67MTPASRML4WAN2AT26V3V","short_pith_number":"pith:T2ZI67MT","canonical_record":{"source":{"id":"quant-ph/0101037","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2001-01-08T14:21:11Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.stat-mech","math-ph","math.MP","physics.atom-ph"],"title_canon_sha256":"397fe5679bb02d954ef4d53386de9fdb872854a8109337edc59700c4fac330bc","abstract_canon_sha256":"1b8d6a4a897464366c544831860f87cf78d6c4d5563041838561588eec7924b8"},"schema_version":"1.0"},"canonical_sha256":"9eb28f7d937825162f96037409ebd5dd4bc104d5e4e81729ead4fb94a3b80d7a","source":{"kind":"arxiv","id":"quant-ph/0101037","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0101037","created_at":"2026-05-18T01:05:05Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0101037v1","created_at":"2026-05-18T01:05:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0101037","created_at":"2026-05-18T01:05:05Z"},{"alias_kind":"pith_short_12","alias_value":"T2ZI67MTPASR","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"T2ZI67MTPASRML4W","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"T2ZI67MT","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:T2ZI67MTPASRML4WAN2AT26V3V","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0101037","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2001-01-08T14:21:11Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.stat-mech","math-ph","math.MP","physics.atom-ph"],"title_canon_sha256":"397fe5679bb02d954ef4d53386de9fdb872854a8109337edc59700c4fac330bc","abstract_canon_sha256":"1b8d6a4a897464366c544831860f87cf78d6c4d5563041838561588eec7924b8"},"schema_version":"1.0"},"canonical_sha256":"9eb28f7d937825162f96037409ebd5dd4bc104d5e4e81729ead4fb94a3b80d7a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:05:05.080888Z","signature_b64":"Q5rvV6xh3d0PJ2+iyB24/hCwRndqX7qRWKGWPh8QQURt3HewMNXk7wCCwKXpr5ANGUvDWWnXSh7vMwONzCmJCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9eb28f7d937825162f96037409ebd5dd4bc104d5e4e81729ead4fb94a3b80d7a","last_reissued_at":"2026-05-18T01:05:05.080332Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:05:05.080332Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0101037","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":"2026-05-18T01:05:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xKIW3zKa2g+Ea0iqgpEzSdkaxovlaQwV0tflQOd4ZvuVIrzfXQ1bQP7UCfTXuqprptn8SV7pFxgDPKF2xux/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T17:04:47.117118Z"},"content_sha256":"c0fb6d72374c6426fe284ec6b3919dd0e00d7e4f70c6b62d51f5be9a9a43576d","schema_version":"1.0","event_id":"sha256:c0fb6d72374c6426fe284ec6b3919dd0e00d7e4f70c6b62d51f5be9a9a43576d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:T2ZI67MTPASRML4WAN2AT26V3V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Zeno dynamics yields ordinary constraints","license":"","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.stat-mech","math-ph","math.MP","physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"A. Scardicchio, L. S. Schulman, P. Facchi, S. Pascazio","submitted_at":"2001-01-08T14:21:11Z","abstract_excerpt":"The dynamics of a quantum system undergoing frequent measurements (quantum Zeno effect) is investigated. Using asymptotic analysis, the system is found to evolve unitarily in a proper subspace of the total Hilbert space. For spatial projections, the generator of the \"Zeno dynamics\" is the Hamiltonian with Dirichlet boundary conditions."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0101037","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":"2026-05-18T01:05:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kojdRkE4pOjwj0v6gKCqvkO+pVqKUatn8KfrQOADtPqhz/VZSNyPh4JrPmVK112bqLxatITQ69M6vulapsOCCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T17:04:47.117579Z"},"content_sha256":"ae529ad3f3ef5a46e7e8858ab16b45d6e85c8b976725f35a29a1918891c92b39","schema_version":"1.0","event_id":"sha256:ae529ad3f3ef5a46e7e8858ab16b45d6e85c8b976725f35a29a1918891c92b39"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T2ZI67MTPASRML4WAN2AT26V3V/bundle.json","state_url":"https://pith.science/pith/T2ZI67MTPASRML4WAN2AT26V3V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T2ZI67MTPASRML4WAN2AT26V3V/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":"2026-07-02T17:04:47Z","links":{"resolver":"https://pith.science/pith/T2ZI67MTPASRML4WAN2AT26V3V","bundle":"https://pith.science/pith/T2ZI67MTPASRML4WAN2AT26V3V/bundle.json","state":"https://pith.science/pith/T2ZI67MTPASRML4WAN2AT26V3V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T2ZI67MTPASRML4WAN2AT26V3V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:T2ZI67MTPASRML4WAN2AT26V3V","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":"1b8d6a4a897464366c544831860f87cf78d6c4d5563041838561588eec7924b8","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.stat-mech","math-ph","math.MP","physics.atom-ph"],"license":"","primary_cat":"quant-ph","submitted_at":"2001-01-08T14:21:11Z","title_canon_sha256":"397fe5679bb02d954ef4d53386de9fdb872854a8109337edc59700c4fac330bc"},"schema_version":"1.0","source":{"id":"quant-ph/0101037","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0101037","created_at":"2026-05-18T01:05:05Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0101037v1","created_at":"2026-05-18T01:05:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0101037","created_at":"2026-05-18T01:05:05Z"},{"alias_kind":"pith_short_12","alias_value":"T2ZI67MTPASR","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"T2ZI67MTPASRML4W","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"T2ZI67MT","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:ae529ad3f3ef5a46e7e8858ab16b45d6e85c8b976725f35a29a1918891c92b39","target":"graph","created_at":"2026-05-18T01:05:05Z","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 dynamics of a quantum system undergoing frequent measurements (quantum Zeno effect) is investigated. Using asymptotic analysis, the system is found to evolve unitarily in a proper subspace of the total Hilbert space. For spatial projections, the generator of the \"Zeno dynamics\" is the Hamiltonian with Dirichlet boundary conditions.","authors_text":"A. Scardicchio, L. S. Schulman, P. Facchi, S. Pascazio","cross_cats":["cond-mat.mes-hall","cond-mat.stat-mech","math-ph","math.MP","physics.atom-ph"],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2001-01-08T14:21:11Z","title":"Zeno dynamics yields ordinary constraints"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0101037","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:c0fb6d72374c6426fe284ec6b3919dd0e00d7e4f70c6b62d51f5be9a9a43576d","target":"record","created_at":"2026-05-18T01:05:05Z","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":"1b8d6a4a897464366c544831860f87cf78d6c4d5563041838561588eec7924b8","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.stat-mech","math-ph","math.MP","physics.atom-ph"],"license":"","primary_cat":"quant-ph","submitted_at":"2001-01-08T14:21:11Z","title_canon_sha256":"397fe5679bb02d954ef4d53386de9fdb872854a8109337edc59700c4fac330bc"},"schema_version":"1.0","source":{"id":"quant-ph/0101037","kind":"arxiv","version":1}},"canonical_sha256":"9eb28f7d937825162f96037409ebd5dd4bc104d5e4e81729ead4fb94a3b80d7a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9eb28f7d937825162f96037409ebd5dd4bc104d5e4e81729ead4fb94a3b80d7a","first_computed_at":"2026-05-18T01:05:05.080332Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:05.080332Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q5rvV6xh3d0PJ2+iyB24/hCwRndqX7qRWKGWPh8QQURt3HewMNXk7wCCwKXpr5ANGUvDWWnXSh7vMwONzCmJCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:05.080888Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0101037","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0fb6d72374c6426fe284ec6b3919dd0e00d7e4f70c6b62d51f5be9a9a43576d","sha256:ae529ad3f3ef5a46e7e8858ab16b45d6e85c8b976725f35a29a1918891c92b39"],"state_sha256":"9f9a42ac51ebc4e1b9815be96b954778d8b5d02861e9cf05408d1ef144f9a271"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iWFCxd6omxctrralrPmmqRvCHnvir4IWNpimP7NE3Fxt7HMEWFTBuvJ3U6PFn9CqluFDD8NxUhOVtcXWbzapAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T17:04:47.119752Z","bundle_sha256":"86ac2e231432024d48d50d6e117b3450d9328a35075615494a830972157d7704"}}