{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:K7FVJLKX237O4QLF5652IX3PAM","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":"d93b962660d4953bb958973cc02f9a0a1b45fd0dd2bfdb5ece83fea2a1c113cd","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1999-05-07T12:32:26Z","title_canon_sha256":"e70f06844e5b70631ba9ac129b54b0b56464ee65f2a36c5e33520955bf7cc1bc"},"schema_version":"1.0","source":{"id":"nucl-th/9905018","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9905018","created_at":"2026-05-18T01:38:12Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9905018v2","created_at":"2026-05-18T01:38:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9905018","created_at":"2026-05-18T01:38:12Z"},{"alias_kind":"pith_short_12","alias_value":"K7FVJLKX237O","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"K7FVJLKX237O4QLF","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"K7FVJLKX","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:01aa1216b8faa327870d08884a8b0f757f682776f634963e27c4d603a595c2be","target":"graph","created_at":"2026-05-18T01:38:12Z","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":"We study the effect of the spreading widths on the excitation probabilities of the double giant dipole resonance. We solve the coupled-channels equations for the excitation of the giant dipole resonance and the double giant dipole resonance. Taking Pb+Pb collisions as example, we study the resulting effect on the excitation amplitudes, and cross sections as a function of the width of the states and of the bombarding energy.","authors_text":"C.A. Bertulani, D. Dolci, G. Baur","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"1999-05-07T12:32:26Z","title":"Influence of damping on the excitation of the double giant resonance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9905018","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":"sha256:515f8f46af5975f8720d0a1a5d23c765c975190f7e4b025d2c8bd2d72b390d19","target":"record","created_at":"2026-05-18T01:38:12Z","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":"d93b962660d4953bb958973cc02f9a0a1b45fd0dd2bfdb5ece83fea2a1c113cd","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1999-05-07T12:32:26Z","title_canon_sha256":"e70f06844e5b70631ba9ac129b54b0b56464ee65f2a36c5e33520955bf7cc1bc"},"schema_version":"1.0","source":{"id":"nucl-th/9905018","kind":"arxiv","version":2}},"canonical_sha256":"57cb54ad57d6feee4165efbba45f6f033373985c74f37d74ae466b4ac2f6f3eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57cb54ad57d6feee4165efbba45f6f033373985c74f37d74ae466b4ac2f6f3eb","first_computed_at":"2026-05-18T01:38:12.084235Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:12.084235Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m23/Vj8EG+hRmrDUo2X+13HF49CSoollqfVQnkULEFPUTxoCzzIGYUbK1Vt9TDikOqZgDvk2IMwdeqqhfGnlCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:12.084774Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/9905018","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:515f8f46af5975f8720d0a1a5d23c765c975190f7e4b025d2c8bd2d72b390d19","sha256:01aa1216b8faa327870d08884a8b0f757f682776f634963e27c4d603a595c2be"],"state_sha256":"c96a260e0d607d2d121b8c4175fdf341ad4c3a230ba1f6beff31f8729f5eae94"}