{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:WNAMBDOSVOJXQCCZ2GKPEAYPNS","short_pith_number":"pith:WNAMBDOS","schema_version":"1.0","canonical_sha256":"b340c08dd2ab93780859d194f2030f6c92f74852c5390d9917a700514c5e3b66","source":{"kind":"arxiv","id":"1509.06239","version":1},"attestation_state":"computed","paper":{"title":"Importance-Truncated Large-Scale Shell Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Christina Stumpf, Jonas Braun, Robert Roth","submitted_at":"2015-09-21T14:25:48Z","abstract_excerpt":"We propose an importance-truncation scheme for the large-scale nuclear shell model that extends its range of applicability to larger valence spaces and mid-shell nuclei. It is based on a perturbative measure for the importance of individual basis states that acts as an additional truncation for the many-body model space in which the eigenvalue problem of the Hamiltonian is solved numerically. Through a posteriori extrapolations of all observables to vanishing importance threshold, the full shell-model results can be recovered. In addition to simple threshold extrapolations, we explore extrapol"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1509.06239","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-09-21T14:25:48Z","cross_cats_sorted":[],"title_canon_sha256":"ae153f77a52bb9955a1c871d1bf612bd5dfdbd3efae592b040b3fbe7c5f85caf","abstract_canon_sha256":"3bdec0a43e3f90ed3c03d246498b331395697d4f4e7bdf7f7033d309637b60af"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:42.954295Z","signature_b64":"1U4WcSjKH8UmFDTF2q3zebdO/Y0OwZ5G75Ie8uwpM0YA70b6GNALdfHnwmnEUgNNZyQvKiRRv0CmEtlOVsndBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b340c08dd2ab93780859d194f2030f6c92f74852c5390d9917a700514c5e3b66","last_reissued_at":"2026-05-18T01:18:42.953680Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:42.953680Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Importance-Truncated Large-Scale Shell Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Christina Stumpf, Jonas Braun, Robert Roth","submitted_at":"2015-09-21T14:25:48Z","abstract_excerpt":"We propose an importance-truncation scheme for the large-scale nuclear shell model that extends its range of applicability to larger valence spaces and mid-shell nuclei. It is based on a perturbative measure for the importance of individual basis states that acts as an additional truncation for the many-body model space in which the eigenvalue problem of the Hamiltonian is solved numerically. Through a posteriori extrapolations of all observables to vanishing importance threshold, the full shell-model results can be recovered. In addition to simple threshold extrapolations, we explore extrapol"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.06239","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1509.06239","created_at":"2026-05-18T01:18:42.953750+00:00"},{"alias_kind":"arxiv_version","alias_value":"1509.06239v1","created_at":"2026-05-18T01:18:42.953750+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.06239","created_at":"2026-05-18T01:18:42.953750+00:00"},{"alias_kind":"pith_short_12","alias_value":"WNAMBDOSVOJX","created_at":"2026-05-18T12:29:47.479230+00:00"},{"alias_kind":"pith_short_16","alias_value":"WNAMBDOSVOJXQCCZ","created_at":"2026-05-18T12:29:47.479230+00:00"},{"alias_kind":"pith_short_8","alias_value":"WNAMBDOS","created_at":"2026-05-18T12:29:47.479230+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/WNAMBDOSVOJXQCCZ2GKPEAYPNS","json":"https://pith.science/pith/WNAMBDOSVOJXQCCZ2GKPEAYPNS.json","graph_json":"https://pith.science/api/pith-number/WNAMBDOSVOJXQCCZ2GKPEAYPNS/graph.json","events_json":"https://pith.science/api/pith-number/WNAMBDOSVOJXQCCZ2GKPEAYPNS/events.json","paper":"https://pith.science/paper/WNAMBDOS"},"agent_actions":{"view_html":"https://pith.science/pith/WNAMBDOSVOJXQCCZ2GKPEAYPNS","download_json":"https://pith.science/pith/WNAMBDOSVOJXQCCZ2GKPEAYPNS.json","view_paper":"https://pith.science/paper/WNAMBDOS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1509.06239&json=true","fetch_graph":"https://pith.science/api/pith-number/WNAMBDOSVOJXQCCZ2GKPEAYPNS/graph.json","fetch_events":"https://pith.science/api/pith-number/WNAMBDOSVOJXQCCZ2GKPEAYPNS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WNAMBDOSVOJXQCCZ2GKPEAYPNS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WNAMBDOSVOJXQCCZ2GKPEAYPNS/action/storage_attestation","attest_author":"https://pith.science/pith/WNAMBDOSVOJXQCCZ2GKPEAYPNS/action/author_attestation","sign_citation":"https://pith.science/pith/WNAMBDOSVOJXQCCZ2GKPEAYPNS/action/citation_signature","submit_replication":"https://pith.science/pith/WNAMBDOSVOJXQCCZ2GKPEAYPNS/action/replication_record"}},"created_at":"2026-05-18T01:18:42.953750+00:00","updated_at":"2026-05-18T01:18:42.953750+00:00"}