{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:6KXO47IHHRB6AEI46LAP53P3AH","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":"80abe64396c49ce269dbe549be9db0e155b34b7dc2de1beefb79673a42b3a71a","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-07-03T17:24:52Z","title_canon_sha256":"cb00d2d967c447756a17edb5d1f1a69194a90cbb912d5ca57ec496549afabdd4"},"schema_version":"1.0","source":{"id":"1207.0756","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.0756","created_at":"2026-05-18T03:43:40Z"},{"alias_kind":"arxiv_version","alias_value":"1207.0756v2","created_at":"2026-05-18T03:43:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.0756","created_at":"2026-05-18T03:43:40Z"},{"alias_kind":"pith_short_12","alias_value":"6KXO47IHHRB6","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6KXO47IHHRB6AEI4","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6KXO47IH","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:1d40188516f20a146616cfd905ac82ac1bd6f715251a9b6c12eb9251e7037573","target":"graph","created_at":"2026-05-18T03:43:40Z","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 two-neutron RPA model has been used to describe helium isotopes with N (the neutron number) = 4, 6, 7, 8 in their ground and excited states. The properties of all these isotopes are given by a single system of equations so that their properties are interdependent. Since the ground states of $^{9}$He and $^{10}$He are still not well established, we have looked how the properties of $^{9}$He induce the properties of the other isotopes, energies and wave functions. Our results suggest an inversion of $2s$-$1p_{1/2}$ shells in $^{9}$He. The corresponding ground states of $^{9}$He and $^{10}$He","authors_text":"Benoit Laurent, Nicole Vinh Mau","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-07-03T17:24:52Z","title":"Description of He isotopes using the particle-particle random-phase approximation model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.0756","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":"sha256:91280fd7fe3c121c60d81ccd8b731a757eb67835a220ca8ddd274c30aa062b9c","target":"record","created_at":"2026-05-18T03:43:40Z","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":"80abe64396c49ce269dbe549be9db0e155b34b7dc2de1beefb79673a42b3a71a","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-07-03T17:24:52Z","title_canon_sha256":"cb00d2d967c447756a17edb5d1f1a69194a90cbb912d5ca57ec496549afabdd4"},"schema_version":"1.0","source":{"id":"1207.0756","kind":"arxiv","version":2}},"canonical_sha256":"f2aeee7d073c43e0111cf2c0feedfb01ed6fd5f9e184709803affe698acef193","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2aeee7d073c43e0111cf2c0feedfb01ed6fd5f9e184709803affe698acef193","first_computed_at":"2026-05-18T03:43:40.054205Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:43:40.054205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ioykkt78VsRpL7IYUcxPSnBm2Hz9mzN0eUeApQ8B6sEV2vWEZYWUT7FfA1pSc/rSHQtz8i8HW0xILU7/gS4iAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:43:40.054786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.0756","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:91280fd7fe3c121c60d81ccd8b731a757eb67835a220ca8ddd274c30aa062b9c","sha256:1d40188516f20a146616cfd905ac82ac1bd6f715251a9b6c12eb9251e7037573"],"state_sha256":"32b7a51e87836229af0d951a9f169b0be95e20c550976eeb17524fc519eb890f"}