{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:6LB7WSLZ3VPGOLBQTLSFRIFXC6","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":"394fdc34603c0fe7dee0d7acb737e442442770405e1cdd65fc929ea23905b0e2","cross_cats_sorted":["physics.atm-clus","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-09-06T19:26:19Z","title_canon_sha256":"6a1b41ce7028f555a6a31d398a54eebf113fa30ddc19feff5846996a26d94561"},"schema_version":"1.0","source":{"id":"1709.01969","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.01969","created_at":"2026-05-17T23:45:21Z"},{"alias_kind":"arxiv_version","alias_value":"1709.01969v4","created_at":"2026-05-17T23:45:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.01969","created_at":"2026-05-17T23:45:21Z"},{"alias_kind":"pith_short_12","alias_value":"6LB7WSLZ3VPG","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6LB7WSLZ3VPGOLBQ","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6LB7WSLZ","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:d170b80d174ae9b7d9052e002f1872d27d9610e8412402032de22a35f26b9afd","target":"graph","created_at":"2026-05-17T23:45:21Z","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 show here that the Hamiltonian for an electronic system may be written exactly in terms of fluctuation operators that transition constituent fragments between internally correlated states, accounting rigorously for inter-fragment electron exchange and charge transfer. Familiar electronic structure approaches can be applied to the renormalized Hamiltonian. For efficiency, the basis for each fragment can be truncated, removing high-energy local arrangements of electrons from consideration, and effectively defining collective coordinates for the fragments. For a large number of problems (espec","authors_text":"Anthony D. Dutoi (1), CA, Stockton, USA), Yuhong Liu (1) ((1) University of the Pacific","cross_cats":["physics.atm-clus","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-09-06T19:26:19Z","title":"Systematically Improvable Excitonic Hamiltonians for Electronic Structure Theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.01969","kind":"arxiv","version":4},"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":"sha256:9344e36b3076775a3a8356d3d4f56876c32461600ad01e6d2e1837d7b1da91dd","target":"record","created_at":"2026-05-17T23:45:21Z","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":"394fdc34603c0fe7dee0d7acb737e442442770405e1cdd65fc929ea23905b0e2","cross_cats_sorted":["physics.atm-clus","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-09-06T19:26:19Z","title_canon_sha256":"6a1b41ce7028f555a6a31d398a54eebf113fa30ddc19feff5846996a26d94561"},"schema_version":"1.0","source":{"id":"1709.01969","kind":"arxiv","version":4}},"canonical_sha256":"f2c3fb4979dd5e672c309ae458a0b717a77503cd40a4a4503e2f93ce8afb6984","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2c3fb4979dd5e672c309ae458a0b717a77503cd40a4a4503e2f93ce8afb6984","first_computed_at":"2026-05-17T23:45:21.077594Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:21.077594Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e5p3HrDnd3yGcfypaa8uxR8h6QaXh+H614nTHmgVDypKV2IKCRnlCfQMCrJZPJNsADEPIMVovXLr/9X8v42+AA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:21.078382Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.01969","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9344e36b3076775a3a8356d3d4f56876c32461600ad01e6d2e1837d7b1da91dd","sha256:d170b80d174ae9b7d9052e002f1872d27d9610e8412402032de22a35f26b9afd"],"state_sha256":"c9cde93f84db3cae7df5249ea16f0c8fe1b6144ad8cc0d809b58ddf16eb929ff"}