{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:5USEB6QPMQFHKAGPXZZOJTDLFF","short_pith_number":"pith:5USEB6QP","canonical_record":{"source":{"id":"quant-ph/0009021","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2000-09-05T18:15:53Z","cross_cats_sorted":[],"title_canon_sha256":"5df4ba24f90cfe5bb577b0f8c771e2c07151ee65f995f21ddc2f499e186cef8a","abstract_canon_sha256":"f981944f9ad6e4f4751158bca35a0530425c3f365df55949a23e541d8999f0c2"},"schema_version":"1.0"},"canonical_sha256":"ed2440fa0f640a7500cfbe72e4cc6b294591f340cac293f7aaf6e885b2e9b371","source":{"kind":"arxiv","id":"quant-ph/0009021","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0009021","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0009021v2","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0009021","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"pith_short_12","alias_value":"5USEB6QPMQFH","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"pith_short_16","alias_value":"5USEB6QPMQFHKAGP","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"pith_short_8","alias_value":"5USEB6QP","created_at":"2026-07-04T16:23:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:5USEB6QPMQFHKAGPXZZOJTDLFF","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0009021","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2000-09-05T18:15:53Z","cross_cats_sorted":[],"title_canon_sha256":"5df4ba24f90cfe5bb577b0f8c771e2c07151ee65f995f21ddc2f499e186cef8a","abstract_canon_sha256":"f981944f9ad6e4f4751158bca35a0530425c3f365df55949a23e541d8999f0c2"},"schema_version":"1.0"},"canonical_sha256":"ed2440fa0f640a7500cfbe72e4cc6b294591f340cac293f7aaf6e885b2e9b371","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:23:01.731525Z","signature_b64":"22fneQIpiUaMxSGeHh7leLlUkIoEXa8YFkbecJntMNMLeawujb+WnprgWsDLe5bIYYYujWDtxO68Re6ozmehDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ed2440fa0f640a7500cfbe72e4cc6b294591f340cac293f7aaf6e885b2e9b371","last_reissued_at":"2026-07-04T16:23:01.731150Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:23:01.731150Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0009021","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:23:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kcCZBEsKM3zfjlm0Is31fo8l0NLd/YBCCKDt+0XWxqyQRR0VC1+4UurDFji6sFiq3GJPLJkDm5fULwxQ5d62Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T05:03:47.518760Z"},"content_sha256":"de4f3c30d61eeab0f360a975fc52e3432c9188e0264d3ff78154bff21a06daa8","schema_version":"1.0","event_id":"sha256:de4f3c30d61eeab0f360a975fc52e3432c9188e0264d3ff78154bff21a06daa8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:5USEB6QPMQFHKAGPXZZOJTDLFF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"What does an observed quantum system reveal to its observer ?","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Christof Wunderlich, Peter E. Toschek","submitted_at":"2000-09-05T18:15:53Z","abstract_excerpt":"The evolution of a quantum system under observation becomes retarded or even impeded. We review this ``quantum Zeno effect'' in the light of the criticism that has been raised upon a previous attempt to demonstrate it, of later reexaminations of both the projection postulate and the significance of the observations, and of the results of a recent experiment on an individual cold atom. Here, the micro-state of the quantum system gets unveiled with the observation, and the effect of measurement is no longer mixed up with dephasing the object's wave function by the reactive effect of the detectio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0009021","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/quant-ph/0009021/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:23:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6CN2INBy3JV4H37g0YCqmwWB+gw8aB23zRDDW3+ol2Fp7NKVprIkOnGXl7kBVeRKv/PdR8bK/gILZ//YApoACw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T05:03:47.519264Z"},"content_sha256":"6a58d6cb7e9f99a2ab5add534b7255d05cf1d489e60107c55e42087308c432ae","schema_version":"1.0","event_id":"sha256:6a58d6cb7e9f99a2ab5add534b7255d05cf1d489e60107c55e42087308c432ae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5USEB6QPMQFHKAGPXZZOJTDLFF/bundle.json","state_url":"https://pith.science/pith/5USEB6QPMQFHKAGPXZZOJTDLFF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5USEB6QPMQFHKAGPXZZOJTDLFF/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":"2026-08-21T05:03:47Z","links":{"resolver":"https://pith.science/pith/5USEB6QPMQFHKAGPXZZOJTDLFF","bundle":"https://pith.science/pith/5USEB6QPMQFHKAGPXZZOJTDLFF/bundle.json","state":"https://pith.science/pith/5USEB6QPMQFHKAGPXZZOJTDLFF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5USEB6QPMQFHKAGPXZZOJTDLFF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:5USEB6QPMQFHKAGPXZZOJTDLFF","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":"f981944f9ad6e4f4751158bca35a0530425c3f365df55949a23e541d8999f0c2","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2000-09-05T18:15:53Z","title_canon_sha256":"5df4ba24f90cfe5bb577b0f8c771e2c07151ee65f995f21ddc2f499e186cef8a"},"schema_version":"1.0","source":{"id":"quant-ph/0009021","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0009021","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0009021v2","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0009021","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"pith_short_12","alias_value":"5USEB6QPMQFH","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"pith_short_16","alias_value":"5USEB6QPMQFHKAGP","created_at":"2026-07-04T16:23:01Z"},{"alias_kind":"pith_short_8","alias_value":"5USEB6QP","created_at":"2026-07-04T16:23:01Z"}],"graph_snapshots":[{"event_id":"sha256:6a58d6cb7e9f99a2ab5add534b7255d05cf1d489e60107c55e42087308c432ae","target":"graph","created_at":"2026-07-04T16:23:01Z","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/quant-ph/0009021/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The evolution of a quantum system under observation becomes retarded or even impeded. We review this ``quantum Zeno effect'' in the light of the criticism that has been raised upon a previous attempt to demonstrate it, of later reexaminations of both the projection postulate and the significance of the observations, and of the results of a recent experiment on an individual cold atom. Here, the micro-state of the quantum system gets unveiled with the observation, and the effect of measurement is no longer mixed up with dephasing the object's wave function by the reactive effect of the detectio","authors_text":"Christof Wunderlich, Peter E. Toschek","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2000-09-05T18:15:53Z","title":"What does an observed quantum system reveal to its observer ?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0009021","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:de4f3c30d61eeab0f360a975fc52e3432c9188e0264d3ff78154bff21a06daa8","target":"record","created_at":"2026-07-04T16:23:01Z","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":"f981944f9ad6e4f4751158bca35a0530425c3f365df55949a23e541d8999f0c2","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2000-09-05T18:15:53Z","title_canon_sha256":"5df4ba24f90cfe5bb577b0f8c771e2c07151ee65f995f21ddc2f499e186cef8a"},"schema_version":"1.0","source":{"id":"quant-ph/0009021","kind":"arxiv","version":2}},"canonical_sha256":"ed2440fa0f640a7500cfbe72e4cc6b294591f340cac293f7aaf6e885b2e9b371","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed2440fa0f640a7500cfbe72e4cc6b294591f340cac293f7aaf6e885b2e9b371","first_computed_at":"2026-07-04T16:23:01.731150Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:23:01.731150Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"22fneQIpiUaMxSGeHh7leLlUkIoEXa8YFkbecJntMNMLeawujb+WnprgWsDLe5bIYYYujWDtxO68Re6ozmehDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:23:01.731525Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0009021","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:de4f3c30d61eeab0f360a975fc52e3432c9188e0264d3ff78154bff21a06daa8","sha256:6a58d6cb7e9f99a2ab5add534b7255d05cf1d489e60107c55e42087308c432ae"],"state_sha256":"f029ade743e8cdfb4bbebc7cb669f1f7bd5e2fa94241b2a0a2fbc1f7ac33e2f5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LAMQd/h4tz/IENY/Dd06z9jq2A2gzFYCnpaCeiB93Vc51KTY/+k27Np13oZot3sr2rVhKp1sZ5ogjMo3JyTQAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T05:03:47.524158Z","bundle_sha256":"c3bce76165cf2da983ff75f8dff6199dc166fda2b1e751bfcdfdce7013bd78e1"}}