{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:2ON6N2K42TI4LE73VF5GW467LT","short_pith_number":"pith:2ON6N2K4","canonical_record":{"source":{"id":"cond-mat/0007142","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.dis-nn","submitted_at":"2000-07-09T09:19:31Z","cross_cats_sorted":[],"title_canon_sha256":"bac6e42f2af72c72f2a51346dfb8721464446d2347a1936ce0432b5b34ed8779","abstract_canon_sha256":"1ac30f67e992905d8d176a5dfd6472f23b830294a9dd47e5739d7e441e0d25db"},"schema_version":"1.0"},"canonical_sha256":"d39be6e95cd4d1c593fba97a6b73df5cfd4353783ecea764b0473d3a2718ce2b","source":{"kind":"arxiv","id":"cond-mat/0007142","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0007142","created_at":"2026-05-18T01:07:12Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0007142v1","created_at":"2026-05-18T01:07:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0007142","created_at":"2026-05-18T01:07:12Z"},{"alias_kind":"pith_short_12","alias_value":"2ON6N2K42TI4","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"2ON6N2K42TI4LE73","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"2ON6N2K4","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:2ON6N2K42TI4LE73VF5GW467LT","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0007142","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.dis-nn","submitted_at":"2000-07-09T09:19:31Z","cross_cats_sorted":[],"title_canon_sha256":"bac6e42f2af72c72f2a51346dfb8721464446d2347a1936ce0432b5b34ed8779","abstract_canon_sha256":"1ac30f67e992905d8d176a5dfd6472f23b830294a9dd47e5739d7e441e0d25db"},"schema_version":"1.0"},"canonical_sha256":"d39be6e95cd4d1c593fba97a6b73df5cfd4353783ecea764b0473d3a2718ce2b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:12.845225Z","signature_b64":"Y1ldDeCadFh33hI28WwtrduqQItYCOFPRuTc6yBCwas/PIJ8nJKXAaashzavOxE2lvgCJEu5oIFAcuObRIn3BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d39be6e95cd4d1c593fba97a6b73df5cfd4353783ecea764b0473d3a2718ce2b","last_reissued_at":"2026-05-18T01:07:12.844667Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:12.844667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0007142","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":"2026-05-18T01:07:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AbTNQjVQjldN/ebKKl2HjqBNO9uscNVHxx7l+tpWQXwBb0eDGd0kFYtPGjqnz61gU7wUIR5GhDGRlOqlIxNSAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:27:44.776905Z"},"content_sha256":"0acad8b17320355e304ed93d5986cfe6736d370fd0eea3b91b8f5f8a4a27b3fb","schema_version":"1.0","event_id":"sha256:0acad8b17320355e304ed93d5986cfe6736d370fd0eea3b91b8f5f8a4a27b3fb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:2ON6N2K42TI4LE73VF5GW467LT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time Arrow in Wave-Packet Evolution","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.dis-nn","authors_text":"Asher Yahalom, Robert Englman","submitted_at":"2000-07-09T09:19:31Z","abstract_excerpt":"Availability of short, femtosecond laser pulses has recently made feasible the probing of phases in an atomic or molecular wave-packet (superposition of energy eigenstates). With short duration excitations the initial form of the wave-packet is an essentially real \"doorway state\", and this develops phases for each of its component amplitudes as it evolves. It is suggested that these phases are hallmarks of a time arrow and irreversibility that are inherent in the quantum mechanical processes of preparation and evolution. To display the non-triviality of the result, we show under what condition"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0007142","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":"2026-05-18T01:07:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F0Pzu9a3rZWR3tRdExA70uZrmp/rksxPMDJpxx0bE8w6xRdAnr1lgmbD1+TNl+EPmlxTpY5uNPxqMqlKlcdGCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:27:44.777616Z"},"content_sha256":"5e97e61d34b4e4b3ea2a4f2d46730be3790611e819f60243f53abc1d275c6a5a","schema_version":"1.0","event_id":"sha256:5e97e61d34b4e4b3ea2a4f2d46730be3790611e819f60243f53abc1d275c6a5a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2ON6N2K42TI4LE73VF5GW467LT/bundle.json","state_url":"https://pith.science/pith/2ON6N2K42TI4LE73VF5GW467LT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2ON6N2K42TI4LE73VF5GW467LT/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":"2026-06-08T02:27:44Z","links":{"resolver":"https://pith.science/pith/2ON6N2K42TI4LE73VF5GW467LT","bundle":"https://pith.science/pith/2ON6N2K42TI4LE73VF5GW467LT/bundle.json","state":"https://pith.science/pith/2ON6N2K42TI4LE73VF5GW467LT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2ON6N2K42TI4LE73VF5GW467LT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:2ON6N2K42TI4LE73VF5GW467LT","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":"1ac30f67e992905d8d176a5dfd6472f23b830294a9dd47e5739d7e441e0d25db","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.dis-nn","submitted_at":"2000-07-09T09:19:31Z","title_canon_sha256":"bac6e42f2af72c72f2a51346dfb8721464446d2347a1936ce0432b5b34ed8779"},"schema_version":"1.0","source":{"id":"cond-mat/0007142","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0007142","created_at":"2026-05-18T01:07:12Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0007142v1","created_at":"2026-05-18T01:07:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0007142","created_at":"2026-05-18T01:07:12Z"},{"alias_kind":"pith_short_12","alias_value":"2ON6N2K42TI4","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"2ON6N2K42TI4LE73","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"2ON6N2K4","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:5e97e61d34b4e4b3ea2a4f2d46730be3790611e819f60243f53abc1d275c6a5a","target":"graph","created_at":"2026-05-18T01:07:12Z","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":"Availability of short, femtosecond laser pulses has recently made feasible the probing of phases in an atomic or molecular wave-packet (superposition of energy eigenstates). With short duration excitations the initial form of the wave-packet is an essentially real \"doorway state\", and this develops phases for each of its component amplitudes as it evolves. It is suggested that these phases are hallmarks of a time arrow and irreversibility that are inherent in the quantum mechanical processes of preparation and evolution. To display the non-triviality of the result, we show under what condition","authors_text":"Asher Yahalom, Robert Englman","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.dis-nn","submitted_at":"2000-07-09T09:19:31Z","title":"Time Arrow in Wave-Packet Evolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0007142","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":"sha256:0acad8b17320355e304ed93d5986cfe6736d370fd0eea3b91b8f5f8a4a27b3fb","target":"record","created_at":"2026-05-18T01:07:12Z","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":"1ac30f67e992905d8d176a5dfd6472f23b830294a9dd47e5739d7e441e0d25db","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.dis-nn","submitted_at":"2000-07-09T09:19:31Z","title_canon_sha256":"bac6e42f2af72c72f2a51346dfb8721464446d2347a1936ce0432b5b34ed8779"},"schema_version":"1.0","source":{"id":"cond-mat/0007142","kind":"arxiv","version":1}},"canonical_sha256":"d39be6e95cd4d1c593fba97a6b73df5cfd4353783ecea764b0473d3a2718ce2b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d39be6e95cd4d1c593fba97a6b73df5cfd4353783ecea764b0473d3a2718ce2b","first_computed_at":"2026-05-18T01:07:12.844667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:12.844667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Y1ldDeCadFh33hI28WwtrduqQItYCOFPRuTc6yBCwas/PIJ8nJKXAaashzavOxE2lvgCJEu5oIFAcuObRIn3BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:12.845225Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0007142","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0acad8b17320355e304ed93d5986cfe6736d370fd0eea3b91b8f5f8a4a27b3fb","sha256:5e97e61d34b4e4b3ea2a4f2d46730be3790611e819f60243f53abc1d275c6a5a"],"state_sha256":"3bd757055a140951af3837d56d344a4e73954e90ad68a0efbb1d1c870f7e0381"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TugjtOAMUMCh2qI+TiRyRi2yHlCi3y/3sTVBXuI3ubBijm2XqRoCMx+4O4QtyYBn0tKNKcjEr2eDx+jwlDVUBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T02:27:44.781956Z","bundle_sha256":"6f84a4ba60b678a9f94f15daee9d71a4446e090a537a557d8492ff249bd00104"}}