{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:FFP3YOPC5CMSZTNXNWMRJ7USU2","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":"c1320d3b73fff139dc13999b649254ab3c9964c64daa869d27ba50122c0f983b","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2021-05-13T12:11:38Z","title_canon_sha256":"e46e2da8dc2c2701b81019a7db4efedb1dc973e5269b9907ad0a9ec3590c75a4"},"schema_version":"1.0","source":{"id":"2105.06806","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.06806","created_at":"2026-07-05T03:46:13Z"},{"alias_kind":"arxiv_version","alias_value":"2105.06806v3","created_at":"2026-07-05T03:46:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.06806","created_at":"2026-07-05T03:46:13Z"},{"alias_kind":"pith_short_12","alias_value":"FFP3YOPC5CMS","created_at":"2026-07-05T03:46:13Z"},{"alias_kind":"pith_short_16","alias_value":"FFP3YOPC5CMSZTNX","created_at":"2026-07-05T03:46:13Z"},{"alias_kind":"pith_short_8","alias_value":"FFP3YOPC","created_at":"2026-07-05T03:46:13Z"}],"graph_snapshots":[{"event_id":"sha256:924eeca7a8459d8e16cc13e0b1744afb5117c136ecc690ba56ad2b9f6f192429","target":"graph","created_at":"2026-07-05T03:46:13Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2105.06806/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present EDIpack, an exact diagonalization package to solve generic quantum impurity problems. The algorithm includes a generalization of the look-up method introduced in [Lin, Gubernatis Comput. Phys., 7 (4) (1993), 400] and enables a massively parallel execution of the matrix-vector linear operations required by Lanczos and Arnoldi algorithms. We show that a suitable Fock basis organization is crucial to optimize the inter-processors communication in a distributed memory setup and to reach sub-linear scaling in sufficiently large systems. We discuss the algorithm in details indicating how ","authors_text":"A. Amaricci, A. Scazzola, F. Petocchi, G. Mazza, L. Crippa, L. de Medici, M. Capone","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2021-05-13T12:11:38Z","title":"EDIpack: A parallel exact diagonalization package for quantum impurity problems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.06806","kind":"arxiv","version":3},"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":"sha256:44f2a9d27c65555ae1903460ca3bff026ebd17dd562c698d8e92d096e62cefdb","target":"record","created_at":"2026-07-05T03:46:13Z","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":"c1320d3b73fff139dc13999b649254ab3c9964c64daa869d27ba50122c0f983b","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2021-05-13T12:11:38Z","title_canon_sha256":"e46e2da8dc2c2701b81019a7db4efedb1dc973e5269b9907ad0a9ec3590c75a4"},"schema_version":"1.0","source":{"id":"2105.06806","kind":"arxiv","version":3}},"canonical_sha256":"295fbc39e2e8992ccdb76d9914fe92a69d49244fb1ff41b775bb97255dca1d24","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"295fbc39e2e8992ccdb76d9914fe92a69d49244fb1ff41b775bb97255dca1d24","first_computed_at":"2026-07-05T03:46:13.253804Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:46:13.253804Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"InW61wXumhi6d0jH8vVcKZJyNzFSY5Nojc0nMgeGfGDG96iMMgeAKks8x7QTXjBmIDQXaVFRfgIO9B+311B7Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:46:13.254290Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.06806","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:44f2a9d27c65555ae1903460ca3bff026ebd17dd562c698d8e92d096e62cefdb","sha256:924eeca7a8459d8e16cc13e0b1744afb5117c136ecc690ba56ad2b9f6f192429"],"state_sha256":"ea6d4ca0b11116fdfe985084e251b46590d23f99162a396f188cd6b01ae8a2e8"}