{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:HUGZSCE74J7ZOVSH7LMPKBJGF2","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":"fdc3a426d798a207771b4d6a9ddad1d29a38970559ed384bd14cb5dc92dec719","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2014-09-15T11:22:52Z","title_canon_sha256":"6e4fca7e146151fdc56b0df0ec7973717b85a4a3e34db0bce238f425a0121c8e"},"schema_version":"1.0","source":{"id":"1409.4211","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.4211","created_at":"2026-05-18T02:42:47Z"},{"alias_kind":"arxiv_version","alias_value":"1409.4211v1","created_at":"2026-05-18T02:42:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.4211","created_at":"2026-05-18T02:42:47Z"},{"alias_kind":"pith_short_12","alias_value":"HUGZSCE74J7Z","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"HUGZSCE74J7ZOVSH","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"HUGZSCE7","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:278950c889427d6fdac2138498c3e3ac2e4e5e75bf4763a23f2a57d1d52c35e0","target":"graph","created_at":"2026-05-18T02:42:47Z","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 present a technique to efficiently compute long-range interactions in systems with periodic boundary conditions. We extend the well-known Ewald method by using a linear combination of screening Gaussian charge distributions instead of only one as in the standard Ewald scheme. The combined simplicity and efficiency of our method is demonstrated, and the scheme is readily applicable to large-scale periodic simulations, classical as well as quantum.","authors_text":"Esa R\\\"as\\\"anen, Ilkka Kyl\\\"anp\\\"a\\\"a","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2014-09-15T11:22:52Z","title":"Extended Ewald Summation Technique"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.4211","kind":"arxiv","version":1},"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":"sha256:1423761cb0445feacdbaf0ed143012e1b777d893451583058675b989b8b56afd","target":"record","created_at":"2026-05-18T02:42:47Z","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":"fdc3a426d798a207771b4d6a9ddad1d29a38970559ed384bd14cb5dc92dec719","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2014-09-15T11:22:52Z","title_canon_sha256":"6e4fca7e146151fdc56b0df0ec7973717b85a4a3e34db0bce238f425a0121c8e"},"schema_version":"1.0","source":{"id":"1409.4211","kind":"arxiv","version":1}},"canonical_sha256":"3d0d99089fe27f975647fad8f505262eb0d401ea67d5b51d80830d20eeb3f1e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d0d99089fe27f975647fad8f505262eb0d401ea67d5b51d80830d20eeb3f1e1","first_computed_at":"2026-05-18T02:42:47.324685Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:42:47.324685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+uZbzvXgjxWg6VPn5EACJoDT21OlG8plcpyavqqOZIxpa7Tth1vQHvNQopW8TuMR8x/c8qrWq9SE6exD3ZwJAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:42:47.325130Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.4211","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1423761cb0445feacdbaf0ed143012e1b777d893451583058675b989b8b56afd","sha256:278950c889427d6fdac2138498c3e3ac2e4e5e75bf4763a23f2a57d1d52c35e0"],"state_sha256":"964e17d66f52402b895efef609e05e27669d9e20a7a60f890f3b70001bb908ff"}