{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:NQEHQOUPNRZV2Q5K7CUZ4HABEC","short_pith_number":"pith:NQEHQOUP","canonical_record":{"source":{"id":"1305.4448","kind":"arxiv","version":7},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T06:37:55Z","cross_cats_sorted":[],"title_canon_sha256":"49221f3e3b39e2b6aa11b8f95acef7b05adbb4f4fe9e4aec0952fa8a5465885d","abstract_canon_sha256":"173139b6ae5cf0b962c822d2971601829c425f506ad0fba4891b2d482e07050f"},"schema_version":"1.0"},"canonical_sha256":"6c08783a8f6c735d43aaf8a99e1c0120bc0727f6d51ccaea37d173f539002a24","source":{"kind":"arxiv","id":"1305.4448","version":7},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.4448","created_at":"2026-05-18T03:11:33Z"},{"alias_kind":"arxiv_version","alias_value":"1305.4448v7","created_at":"2026-05-18T03:11:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.4448","created_at":"2026-05-18T03:11:33Z"},{"alias_kind":"pith_short_12","alias_value":"NQEHQOUPNRZV","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NQEHQOUPNRZV2Q5K","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NQEHQOUP","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:NQEHQOUPNRZV2Q5K7CUZ4HABEC","target":"record","payload":{"canonical_record":{"source":{"id":"1305.4448","kind":"arxiv","version":7},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T06:37:55Z","cross_cats_sorted":[],"title_canon_sha256":"49221f3e3b39e2b6aa11b8f95acef7b05adbb4f4fe9e4aec0952fa8a5465885d","abstract_canon_sha256":"173139b6ae5cf0b962c822d2971601829c425f506ad0fba4891b2d482e07050f"},"schema_version":"1.0"},"canonical_sha256":"6c08783a8f6c735d43aaf8a99e1c0120bc0727f6d51ccaea37d173f539002a24","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:11:33.228232Z","signature_b64":"JTkJsE5Sk5EMvPxx6uHTaGJ4zhazrTQ/Ed2UXLUenVcxNxhIHhwdn9m6DED8aIvv2zSw0yjkjRy5sqfrEz/MCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c08783a8f6c735d43aaf8a99e1c0120bc0727f6d51ccaea37d173f539002a24","last_reissued_at":"2026-05-18T03:11:33.227701Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:11:33.227701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.4448","source_version":7,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:11:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZEd2drIhFUwUoZYzNlyPp2gZ0IfEj00Bare5+kr++G2Y7y3gx8VUFntwFOxbYosVH7XvuqwZyGhiaAw6JgPxCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:55:42.763421Z"},"content_sha256":"ddefdad3119ec9d922ef6cc77a799cf6cfe5348f996e59585dbe836703d2469b","schema_version":"1.0","event_id":"sha256:ddefdad3119ec9d922ef6cc77a799cf6cfe5348f996e59585dbe836703d2469b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:NQEHQOUPNRZV2Q5K7CUZ4HABEC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cooperation of anti-aligning and aligning shell-model forces for N=Z","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"K. Neerg{\\aa}rd","submitted_at":"2013-05-20T06:37:55Z","abstract_excerpt":"For two neutrons and two protons or two neutron holes and two proton holes in a single j-shell, the state |phi> with isospin and seniority zero and the lowest angular momentum zero state |chi> produced by an attractive interaction of quasinucleon pairs with angular momentum 2j have a large overlap for all relevant j and large contents of quasinucleon pairs with angular momenta 2j and 0, respectively. In the 1f7/2 and 1g9/2 shells, the large negative matrix elements of the effective interaction in these two channels relative to most of the rest therefore_cooperate_ to produce a ground state whi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.4448","kind":"arxiv","version":7},"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":"2026-05-18T03:11:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q2dbVc9zFJjJF597jYSQ39PrWPJCmGYYObGYwORIIqVaYobimCrnkDJVubYhZyCVj4ceXwdNpt1k57r5DqTsBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:55:42.763767Z"},"content_sha256":"4b2401933233f4286f2179ed4f513c497dcb6bd36c0693ad9a074cc3b2c398f7","schema_version":"1.0","event_id":"sha256:4b2401933233f4286f2179ed4f513c497dcb6bd36c0693ad9a074cc3b2c398f7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NQEHQOUPNRZV2Q5K7CUZ4HABEC/bundle.json","state_url":"https://pith.science/pith/NQEHQOUPNRZV2Q5K7CUZ4HABEC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NQEHQOUPNRZV2Q5K7CUZ4HABEC/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":"2026-06-03T05:55:42Z","links":{"resolver":"https://pith.science/pith/NQEHQOUPNRZV2Q5K7CUZ4HABEC","bundle":"https://pith.science/pith/NQEHQOUPNRZV2Q5K7CUZ4HABEC/bundle.json","state":"https://pith.science/pith/NQEHQOUPNRZV2Q5K7CUZ4HABEC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NQEHQOUPNRZV2Q5K7CUZ4HABEC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:NQEHQOUPNRZV2Q5K7CUZ4HABEC","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":"173139b6ae5cf0b962c822d2971601829c425f506ad0fba4891b2d482e07050f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T06:37:55Z","title_canon_sha256":"49221f3e3b39e2b6aa11b8f95acef7b05adbb4f4fe9e4aec0952fa8a5465885d"},"schema_version":"1.0","source":{"id":"1305.4448","kind":"arxiv","version":7}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.4448","created_at":"2026-05-18T03:11:33Z"},{"alias_kind":"arxiv_version","alias_value":"1305.4448v7","created_at":"2026-05-18T03:11:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.4448","created_at":"2026-05-18T03:11:33Z"},{"alias_kind":"pith_short_12","alias_value":"NQEHQOUPNRZV","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NQEHQOUPNRZV2Q5K","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NQEHQOUP","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:4b2401933233f4286f2179ed4f513c497dcb6bd36c0693ad9a074cc3b2c398f7","target":"graph","created_at":"2026-05-18T03:11:33Z","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":"For two neutrons and two protons or two neutron holes and two proton holes in a single j-shell, the state |phi> with isospin and seniority zero and the lowest angular momentum zero state |chi> produced by an attractive interaction of quasinucleon pairs with angular momentum 2j have a large overlap for all relevant j and large contents of quasinucleon pairs with angular momenta 2j and 0, respectively. In the 1f7/2 and 1g9/2 shells, the large negative matrix elements of the effective interaction in these two channels relative to most of the rest therefore_cooperate_ to produce a ground state whi","authors_text":"K. Neerg{\\aa}rd","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T06:37:55Z","title":"Cooperation of anti-aligning and aligning shell-model forces for N=Z"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.4448","kind":"arxiv","version":7},"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:ddefdad3119ec9d922ef6cc77a799cf6cfe5348f996e59585dbe836703d2469b","target":"record","created_at":"2026-05-18T03:11:33Z","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":"173139b6ae5cf0b962c822d2971601829c425f506ad0fba4891b2d482e07050f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T06:37:55Z","title_canon_sha256":"49221f3e3b39e2b6aa11b8f95acef7b05adbb4f4fe9e4aec0952fa8a5465885d"},"schema_version":"1.0","source":{"id":"1305.4448","kind":"arxiv","version":7}},"canonical_sha256":"6c08783a8f6c735d43aaf8a99e1c0120bc0727f6d51ccaea37d173f539002a24","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c08783a8f6c735d43aaf8a99e1c0120bc0727f6d51ccaea37d173f539002a24","first_computed_at":"2026-05-18T03:11:33.227701Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:11:33.227701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JTkJsE5Sk5EMvPxx6uHTaGJ4zhazrTQ/Ed2UXLUenVcxNxhIHhwdn9m6DED8aIvv2zSw0yjkjRy5sqfrEz/MCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:11:33.228232Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.4448","source_kind":"arxiv","source_version":7}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ddefdad3119ec9d922ef6cc77a799cf6cfe5348f996e59585dbe836703d2469b","sha256:4b2401933233f4286f2179ed4f513c497dcb6bd36c0693ad9a074cc3b2c398f7"],"state_sha256":"497de4a693896af99a8a980d3505e2f8df7026066ce5e65afd1909a7bfd73c87"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8vSrIn08CX4Lp5VvErwFgFNHneU5P1bmpsU3yActSp6Y6vNyHe1zwMmBi0KlcMxSBVO8A/fsO+W/mZDrYFM/CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T05:55:42.765659Z","bundle_sha256":"a1116563e1dcd12ef765669c0605acfb5990ddf0d9af7a8e1c70411818e44132"}}