{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DNCOKL5Q6DEFGFTAOPVRST5J3Q","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":"d7e052b1e1a282c51ca58cb652ca0106b4c00ba9f2814500d602ba9262eff889","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-05-01T07:17:49Z","title_canon_sha256":"98f8b7b9b87b78b4b6bbcc6d84803d65db6d8f30713a5aded6f7fae400b6b72a"},"schema_version":"1.0","source":{"id":"1605.00210","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.00210","created_at":"2026-05-18T00:52:17Z"},{"alias_kind":"arxiv_version","alias_value":"1605.00210v1","created_at":"2026-05-18T00:52:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.00210","created_at":"2026-05-18T00:52:17Z"},{"alias_kind":"pith_short_12","alias_value":"DNCOKL5Q6DEF","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DNCOKL5Q6DEFGFTA","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DNCOKL5Q","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:2c874f79d56d66e2d15843de53acf0931abb840cbef06913a5eb258da2d64ce6","target":"graph","created_at":"2026-05-18T00:52:17Z","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 spectral fluctuations of the $^{208}$Pb nucleus using the complete experimental spectrum of 151 states up to excitation energies of $6.20$ MeV recently identified at the Maier-Leibnitz-Laboratorium at Garching, Germany. For natural parity states the results are very close to the predictions of Random Matrix Theory (RMT) for the nearest-neighbor spacing distribution. A quantitative estimate of the agreement is given by the Brody parameter $\\omega$, which takes the value $\\omega=0$ for regular systems and $\\omega \\simeq 1$ for chaotic systems. We obtain $\\omega=0.85 \\pm 0.02$ which ","authors_text":"A. Heusler, J.M.G. G\\'omez, L. Mu\\~noz, R. A. Molina","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-05-01T07:17:49Z","title":"First clear evidence of quantum chaos in the bound states of an atomic nucleus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.00210","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:acca3d622e78b845fcf0e916d1580f73cc082f6ee53a81ee35c859225e820e66","target":"record","created_at":"2026-05-18T00:52:17Z","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":"d7e052b1e1a282c51ca58cb652ca0106b4c00ba9f2814500d602ba9262eff889","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-05-01T07:17:49Z","title_canon_sha256":"98f8b7b9b87b78b4b6bbcc6d84803d65db6d8f30713a5aded6f7fae400b6b72a"},"schema_version":"1.0","source":{"id":"1605.00210","kind":"arxiv","version":1}},"canonical_sha256":"1b44e52fb0f0c853166073eb194fa9dc267b0c9e09405f2ee54bf0eb07df41f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1b44e52fb0f0c853166073eb194fa9dc267b0c9e09405f2ee54bf0eb07df41f1","first_computed_at":"2026-05-18T00:52:17.339991Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:17.339991Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b9XPExrevaM5CtZ1dXwBXpU3UNN7dRPHKgoh88XPIiMIBJ5V3ZnWlFFIDz3KK/i3yri/F+d+2hY5RmOogfmuBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:17.340562Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.00210","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:acca3d622e78b845fcf0e916d1580f73cc082f6ee53a81ee35c859225e820e66","sha256:2c874f79d56d66e2d15843de53acf0931abb840cbef06913a5eb258da2d64ce6"],"state_sha256":"925377abec894cacdbbaad372e5cf4d02bcbfb5c3760878caffc1d167b378adf"}