{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:ORSG25QZCYGRLPTXUBDNF4SVOK","short_pith_number":"pith:ORSG25QZ","canonical_record":{"source":{"id":"nucl-th/0001016","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2000-01-09T17:43:28Z","cross_cats_sorted":[],"title_canon_sha256":"ed5ed390fe5e0c7594044d660fee0b97e6926de397d750a7894eaa20eff2d46c","abstract_canon_sha256":"c70a39638c125b8618a5c5f59bba9cbeb4eac6c85bae500c28e80ce2f307037f"},"schema_version":"1.0"},"canonical_sha256":"74646d7619160d15be77a046d2f255728f48bae0f1e7dac3d468767f1ddd2517","source":{"kind":"arxiv","id":"nucl-th/0001016","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0001016","created_at":"2026-05-18T04:31:00Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0001016v1","created_at":"2026-05-18T04:31:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0001016","created_at":"2026-05-18T04:31:00Z"},{"alias_kind":"pith_short_12","alias_value":"ORSG25QZCYGR","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"ORSG25QZCYGRLPTX","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"ORSG25QZ","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:ORSG25QZCYGRLPTXUBDNF4SVOK","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/0001016","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2000-01-09T17:43:28Z","cross_cats_sorted":[],"title_canon_sha256":"ed5ed390fe5e0c7594044d660fee0b97e6926de397d750a7894eaa20eff2d46c","abstract_canon_sha256":"c70a39638c125b8618a5c5f59bba9cbeb4eac6c85bae500c28e80ce2f307037f"},"schema_version":"1.0"},"canonical_sha256":"74646d7619160d15be77a046d2f255728f48bae0f1e7dac3d468767f1ddd2517","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:31:00.225844Z","signature_b64":"3671yZkkWUyvGF7xXyRhcsf79pHdw3NocyodmyBvqcyIlWFGVuHL77a5q2jqiZfLIqfUTcFqo/JV2giUWtQ8Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"74646d7619160d15be77a046d2f255728f48bae0f1e7dac3d468767f1ddd2517","last_reissued_at":"2026-05-18T04:31:00.225111Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:31:00.225111Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/0001016","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":"2026-05-18T04:31:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mOuAHsfGbOj/YMQo01apGBqSgo6YdCWsPVu6UMbU0OuSWWLJpiKy/+J2+P44dePaXotebkwxcCoTUqaSBb03Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T13:22:16.996452Z"},"content_sha256":"0120ce31756ee25b0d3b6d1fd4dde4de96e3c9ead4a7182734ed60f6027852c5","schema_version":"1.0","event_id":"sha256:0120ce31756ee25b0d3b6d1fd4dde4de96e3c9ead4a7182734ed60f6027852c5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:ORSG25QZCYGRLPTXUBDNF4SVOK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strongly damped nuclear collisions: zero or first sound ?","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A.B. Larionov, J. Piperova, M. Colonna, M. Di Toro","submitted_at":"2000-01-09T17:43:28Z","abstract_excerpt":"The relaxation of the collective quadrupole motion in the initial stage of a central heavy ion collision at beam energies $E_{lab}=5\\div20$ AMeV is studied within a microscopic kinetic transport model. The damping rate is shown to be a non-monotonic function of E_{lab} for a given pair of colliding nuclei. This fact is interpreted as a manifestation of the zero-to-first sound transition in a finite nuclear system."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0001016","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":"2026-05-18T04:31:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JsuOc/iKw2X3JyMxlZtzUvDvQ9HxlTO5RLHTvNzrrTScatZZb0Dqt+gnnQysOTwr+Iw1E6t56B/X5CuFvZQNAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T13:22:16.997080Z"},"content_sha256":"d1ea6ac803ffe01f5ce07d2549ea9431e99642a043cdc27501149bce06cd02d4","schema_version":"1.0","event_id":"sha256:d1ea6ac803ffe01f5ce07d2549ea9431e99642a043cdc27501149bce06cd02d4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ORSG25QZCYGRLPTXUBDNF4SVOK/bundle.json","state_url":"https://pith.science/pith/ORSG25QZCYGRLPTXUBDNF4SVOK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ORSG25QZCYGRLPTXUBDNF4SVOK/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":"2026-06-06T13:22:16Z","links":{"resolver":"https://pith.science/pith/ORSG25QZCYGRLPTXUBDNF4SVOK","bundle":"https://pith.science/pith/ORSG25QZCYGRLPTXUBDNF4SVOK/bundle.json","state":"https://pith.science/pith/ORSG25QZCYGRLPTXUBDNF4SVOK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ORSG25QZCYGRLPTXUBDNF4SVOK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:ORSG25QZCYGRLPTXUBDNF4SVOK","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":"c70a39638c125b8618a5c5f59bba9cbeb4eac6c85bae500c28e80ce2f307037f","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2000-01-09T17:43:28Z","title_canon_sha256":"ed5ed390fe5e0c7594044d660fee0b97e6926de397d750a7894eaa20eff2d46c"},"schema_version":"1.0","source":{"id":"nucl-th/0001016","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0001016","created_at":"2026-05-18T04:31:00Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0001016v1","created_at":"2026-05-18T04:31:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0001016","created_at":"2026-05-18T04:31:00Z"},{"alias_kind":"pith_short_12","alias_value":"ORSG25QZCYGR","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"ORSG25QZCYGRLPTX","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"ORSG25QZ","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:d1ea6ac803ffe01f5ce07d2549ea9431e99642a043cdc27501149bce06cd02d4","target":"graph","created_at":"2026-05-18T04:31:00Z","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 relaxation of the collective quadrupole motion in the initial stage of a central heavy ion collision at beam energies $E_{lab}=5\\div20$ AMeV is studied within a microscopic kinetic transport model. The damping rate is shown to be a non-monotonic function of E_{lab} for a given pair of colliding nuclei. This fact is interpreted as a manifestation of the zero-to-first sound transition in a finite nuclear system.","authors_text":"A.B. Larionov, J. Piperova, M. Colonna, M. Di Toro","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2000-01-09T17:43:28Z","title":"Strongly damped nuclear collisions: zero or first sound ?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0001016","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":"sha256:0120ce31756ee25b0d3b6d1fd4dde4de96e3c9ead4a7182734ed60f6027852c5","target":"record","created_at":"2026-05-18T04:31:00Z","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":"c70a39638c125b8618a5c5f59bba9cbeb4eac6c85bae500c28e80ce2f307037f","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2000-01-09T17:43:28Z","title_canon_sha256":"ed5ed390fe5e0c7594044d660fee0b97e6926de397d750a7894eaa20eff2d46c"},"schema_version":"1.0","source":{"id":"nucl-th/0001016","kind":"arxiv","version":1}},"canonical_sha256":"74646d7619160d15be77a046d2f255728f48bae0f1e7dac3d468767f1ddd2517","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"74646d7619160d15be77a046d2f255728f48bae0f1e7dac3d468767f1ddd2517","first_computed_at":"2026-05-18T04:31:00.225111Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:00.225111Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3671yZkkWUyvGF7xXyRhcsf79pHdw3NocyodmyBvqcyIlWFGVuHL77a5q2jqiZfLIqfUTcFqo/JV2giUWtQ8Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:00.225844Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/0001016","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0120ce31756ee25b0d3b6d1fd4dde4de96e3c9ead4a7182734ed60f6027852c5","sha256:d1ea6ac803ffe01f5ce07d2549ea9431e99642a043cdc27501149bce06cd02d4"],"state_sha256":"7456b7a9186fb143423a902db3c3afcdbbb6438c7eeaf647b01290b6b6eae560"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7d8fmglYcpUGgIlILx4GKJ+ilZtReD4t6BNQNvKxj6cNzMgWMTLTvGdk3iWKzPdQbYo56l5kat6mZqTo8USgDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T13:22:17.000803Z","bundle_sha256":"e3611ca32da517aa3b7c038143df36a509e044d39dc20d130a80494a65916c06"}}