{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:4JKXKRU7LBTQ7YEWSU3SGD66TA","short_pith_number":"pith:4JKXKRU7","canonical_record":{"source":{"id":"1807.10947","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-28T15:03:20Z","cross_cats_sorted":["physics.atm-clus"],"title_canon_sha256":"7fc6c9beca665472e30c6fd5b2cd2057963a62ba216750d289469f1cb0b2d245","abstract_canon_sha256":"9705e72185cbf9fc5271050abc55737fb05aa2c3ad522c28764293609e6e2256"},"schema_version":"1.0"},"canonical_sha256":"e25575469f58670fe0969537230fde981c1e3e8003c4f08b80573e1be94dc7b1","source":{"kind":"arxiv","id":"1807.10947","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.10947","created_at":"2026-05-18T00:04:44Z"},{"alias_kind":"arxiv_version","alias_value":"1807.10947v1","created_at":"2026-05-18T00:04:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.10947","created_at":"2026-05-18T00:04:44Z"},{"alias_kind":"pith_short_12","alias_value":"4JKXKRU7LBTQ","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4JKXKRU7LBTQ7YEW","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4JKXKRU7","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:4JKXKRU7LBTQ7YEWSU3SGD66TA","target":"record","payload":{"canonical_record":{"source":{"id":"1807.10947","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-28T15:03:20Z","cross_cats_sorted":["physics.atm-clus"],"title_canon_sha256":"7fc6c9beca665472e30c6fd5b2cd2057963a62ba216750d289469f1cb0b2d245","abstract_canon_sha256":"9705e72185cbf9fc5271050abc55737fb05aa2c3ad522c28764293609e6e2256"},"schema_version":"1.0"},"canonical_sha256":"e25575469f58670fe0969537230fde981c1e3e8003c4f08b80573e1be94dc7b1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:44.530676Z","signature_b64":"rWeKoWQlFOoz1eoOds2964wFRyejNpEmfcQ4HrRHOIXKlNzXHnhzlcu/3HoFp89qDaYzbQ8ECbykMw7TYHauAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e25575469f58670fe0969537230fde981c1e3e8003c4f08b80573e1be94dc7b1","last_reissued_at":"2026-05-18T00:04:44.530185Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:44.530185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.10947","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:04:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mvLTb7Ex+Tn8G7q7P6eGjFSxwG7hhJRu96oUfHki8qfsr4DZ7yzWxjuyVdDxCck4lvbEZy9iEruk5gdTGMoCDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T01:12:14.508343Z"},"content_sha256":"451d065e5a95aad0f800632d585560512a6a67f7087801ecff72bae85f04063e","schema_version":"1.0","event_id":"sha256:451d065e5a95aad0f800632d585560512a6a67f7087801ecff72bae85f04063e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:4JKXKRU7LBTQ7YEWSU3SGD66TA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum hydrodynamics for nanoplasmonics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atm-clus"],"primary_cat":"cond-mat.mes-hall","authors_text":"Fatema Tanjia, Giovanni Manfredi, Paul-Antoine Hervieux","submitted_at":"2018-07-28T15:03:20Z","abstract_excerpt":"Quantum effects play a significant role in nanometric plasmonic devices, such as small metal clusters and metallic nanoshells. For structures containing a large number of electrons, ab-initio methods such as the time-dependent density functional theory (TD-DFT) are often impractical because of severe computational constraints. Quantum hydrodynamics (QHD) offers a valuable alternative by representing the electron population as a continuous fluid medium evolving under the action of the self-consistent and external fields. Although relatively simple, QHD can incorporate quantum and nonlinear effe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.10947","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:04:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1uFfhSivgyjHNnALgok24QiiCKudNyD0ztE+j8WeDoDpN7gMPh1hxuNst7dcPcJrv2NHA4JqrAiqq2rEyoWFDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T01:12:14.508717Z"},"content_sha256":"2521f648b774ebdbe4f6ffb1292fefc7ccb6d5db5b4b797d13320c32bbe13e8f","schema_version":"1.0","event_id":"sha256:2521f648b774ebdbe4f6ffb1292fefc7ccb6d5db5b4b797d13320c32bbe13e8f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4JKXKRU7LBTQ7YEWSU3SGD66TA/bundle.json","state_url":"https://pith.science/pith/4JKXKRU7LBTQ7YEWSU3SGD66TA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4JKXKRU7LBTQ7YEWSU3SGD66TA/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-27T01:12:14Z","links":{"resolver":"https://pith.science/pith/4JKXKRU7LBTQ7YEWSU3SGD66TA","bundle":"https://pith.science/pith/4JKXKRU7LBTQ7YEWSU3SGD66TA/bundle.json","state":"https://pith.science/pith/4JKXKRU7LBTQ7YEWSU3SGD66TA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4JKXKRU7LBTQ7YEWSU3SGD66TA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:4JKXKRU7LBTQ7YEWSU3SGD66TA","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":"9705e72185cbf9fc5271050abc55737fb05aa2c3ad522c28764293609e6e2256","cross_cats_sorted":["physics.atm-clus"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-28T15:03:20Z","title_canon_sha256":"7fc6c9beca665472e30c6fd5b2cd2057963a62ba216750d289469f1cb0b2d245"},"schema_version":"1.0","source":{"id":"1807.10947","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.10947","created_at":"2026-05-18T00:04:44Z"},{"alias_kind":"arxiv_version","alias_value":"1807.10947v1","created_at":"2026-05-18T00:04:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.10947","created_at":"2026-05-18T00:04:44Z"},{"alias_kind":"pith_short_12","alias_value":"4JKXKRU7LBTQ","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4JKXKRU7LBTQ7YEW","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4JKXKRU7","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:2521f648b774ebdbe4f6ffb1292fefc7ccb6d5db5b4b797d13320c32bbe13e8f","target":"graph","created_at":"2026-05-18T00:04:44Z","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":"Quantum effects play a significant role in nanometric plasmonic devices, such as small metal clusters and metallic nanoshells. For structures containing a large number of electrons, ab-initio methods such as the time-dependent density functional theory (TD-DFT) are often impractical because of severe computational constraints. Quantum hydrodynamics (QHD) offers a valuable alternative by representing the electron population as a continuous fluid medium evolving under the action of the self-consistent and external fields. Although relatively simple, QHD can incorporate quantum and nonlinear effe","authors_text":"Fatema Tanjia, Giovanni Manfredi, Paul-Antoine Hervieux","cross_cats":["physics.atm-clus"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-28T15:03:20Z","title":"Quantum hydrodynamics for nanoplasmonics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.10947","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":"sha256:451d065e5a95aad0f800632d585560512a6a67f7087801ecff72bae85f04063e","target":"record","created_at":"2026-05-18T00:04:44Z","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":"9705e72185cbf9fc5271050abc55737fb05aa2c3ad522c28764293609e6e2256","cross_cats_sorted":["physics.atm-clus"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-28T15:03:20Z","title_canon_sha256":"7fc6c9beca665472e30c6fd5b2cd2057963a62ba216750d289469f1cb0b2d245"},"schema_version":"1.0","source":{"id":"1807.10947","kind":"arxiv","version":1}},"canonical_sha256":"e25575469f58670fe0969537230fde981c1e3e8003c4f08b80573e1be94dc7b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e25575469f58670fe0969537230fde981c1e3e8003c4f08b80573e1be94dc7b1","first_computed_at":"2026-05-18T00:04:44.530185Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:44.530185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rWeKoWQlFOoz1eoOds2964wFRyejNpEmfcQ4HrRHOIXKlNzXHnhzlcu/3HoFp89qDaYzbQ8ECbykMw7TYHauAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:44.530676Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.10947","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:451d065e5a95aad0f800632d585560512a6a67f7087801ecff72bae85f04063e","sha256:2521f648b774ebdbe4f6ffb1292fefc7ccb6d5db5b4b797d13320c32bbe13e8f"],"state_sha256":"f25c998180d82af352d4c030a143449e1eec261e38d514bfc144c64c6acdd27a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S+Ezw8ZyLds2HZH4ZYlxeN/kRK0TO5TCm198CsZpH3U6EmPoRR1YZvjxSsxMiq/AS2PC5EeN1Yg+16btkEr5DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T01:12:14.510650Z","bundle_sha256":"123790b72aa6a5f9325d00d4df707942a928b9c8dc44d52a206fd5869614fabf"}}