{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UDCFXJEXPDWZ4D3W7YE5MZXP3M","short_pith_number":"pith:UDCFXJEX","canonical_record":{"source":{"id":"1906.09589","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-23T12:17:40Z","cross_cats_sorted":["math.SG","physics.optics"],"title_canon_sha256":"64471cf22f47ad9f8c7c2df70fff9213b7e99c3d784e3a8bdd6257451af500c0","abstract_canon_sha256":"a7229e43220c7a2b9df525c92210626bede77dc771077dcbaaff36a3fdb885fc"},"schema_version":"1.0"},"canonical_sha256":"a0c45ba49778ed9e0f76fe09d666efdb04431ff247a84c5312023392283aeb3e","source":{"kind":"arxiv","id":"1906.09589","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.09589","created_at":"2026-05-17T23:42:37Z"},{"alias_kind":"arxiv_version","alias_value":"1906.09589v1","created_at":"2026-05-17T23:42:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09589","created_at":"2026-05-17T23:42:37Z"},{"alias_kind":"pith_short_12","alias_value":"UDCFXJEXPDWZ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UDCFXJEXPDWZ4D3W","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UDCFXJEX","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UDCFXJEXPDWZ4D3W7YE5MZXP3M","target":"record","payload":{"canonical_record":{"source":{"id":"1906.09589","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-23T12:17:40Z","cross_cats_sorted":["math.SG","physics.optics"],"title_canon_sha256":"64471cf22f47ad9f8c7c2df70fff9213b7e99c3d784e3a8bdd6257451af500c0","abstract_canon_sha256":"a7229e43220c7a2b9df525c92210626bede77dc771077dcbaaff36a3fdb885fc"},"schema_version":"1.0"},"canonical_sha256":"a0c45ba49778ed9e0f76fe09d666efdb04431ff247a84c5312023392283aeb3e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:37.476144Z","signature_b64":"zka8psDlGuwhL5WMrrW25MqsjJA+D8WEjqnqk21ojzah5f9B01L/MnlD3W3SEiczxgXvQsaFdyz96lggKS3LBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0c45ba49778ed9e0f76fe09d666efdb04431ff247a84c5312023392283aeb3e","last_reissued_at":"2026-05-17T23:42:37.475399Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:37.475399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.09589","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":"2026-05-17T23:42:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a466qKhrdGKi1gxo9s8oEnnszQxVR2TpNDYAEuveMYEolBmQBzBT+oAVNos/Zylvs5sPDgFSjAJAmSqQLJiOBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:56:02.776377Z"},"content_sha256":"3e8b1bf369b5dfa77923bb488462f0c09174488a9da1a9b10c8fac4b60db47e6","schema_version":"1.0","event_id":"sha256:3e8b1bf369b5dfa77923bb488462f0c09174488a9da1a9b10c8fac4b60db47e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UDCFXJEXPDWZ4D3W7YE5MZXP3M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulating Maxwell-Schr\\\"odinger Equations by High-Order Symplectic FDTD Algorithm","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.SG","physics.optics"],"primary_cat":"physics.comp-ph","authors_text":"Guoda Xie, Ming Fang, Wei E.I. Sha, Zhixiang Huang","submitted_at":"2019-06-23T12:17:40Z","abstract_excerpt":"A novel symplectic algorithm is proposed to solve the Maxwell-Schr\\\"odinger (M-S) system for investigating light-matter interaction. Using the fourth-order symplectic integration and fourth-order collocated differences, Maxwell-Schr\\\"odinger equations are discretized in temporal and spatial domains, respectively. The symplectic finite-difference time-domain (SFDTD) algorithm is developed for accurate and efficient study of coherent interaction between electromagnetic fields and artificial atoms. Particularly, the Dirichlet boundary condition is adopted for modeling the Rabi oscillation problem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09589","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":"2026-05-17T23:42:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h1ZVzfn+b20v6W7YQ7QU2SnFzrHp6+5eXlKAUqbzoIbKlwRifolilxVPMQ8zvFvzkMSc9ZyPSnB197dY+HS/DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:56:02.776973Z"},"content_sha256":"9ae3f5b7debe821da612f5aae3025333ea6732d3ead415c98fd60c954f25ba78","schema_version":"1.0","event_id":"sha256:9ae3f5b7debe821da612f5aae3025333ea6732d3ead415c98fd60c954f25ba78"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UDCFXJEXPDWZ4D3W7YE5MZXP3M/bundle.json","state_url":"https://pith.science/pith/UDCFXJEXPDWZ4D3W7YE5MZXP3M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UDCFXJEXPDWZ4D3W7YE5MZXP3M/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":"2026-05-30T08:56:02Z","links":{"resolver":"https://pith.science/pith/UDCFXJEXPDWZ4D3W7YE5MZXP3M","bundle":"https://pith.science/pith/UDCFXJEXPDWZ4D3W7YE5MZXP3M/bundle.json","state":"https://pith.science/pith/UDCFXJEXPDWZ4D3W7YE5MZXP3M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UDCFXJEXPDWZ4D3W7YE5MZXP3M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UDCFXJEXPDWZ4D3W7YE5MZXP3M","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":"a7229e43220c7a2b9df525c92210626bede77dc771077dcbaaff36a3fdb885fc","cross_cats_sorted":["math.SG","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-23T12:17:40Z","title_canon_sha256":"64471cf22f47ad9f8c7c2df70fff9213b7e99c3d784e3a8bdd6257451af500c0"},"schema_version":"1.0","source":{"id":"1906.09589","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.09589","created_at":"2026-05-17T23:42:37Z"},{"alias_kind":"arxiv_version","alias_value":"1906.09589v1","created_at":"2026-05-17T23:42:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09589","created_at":"2026-05-17T23:42:37Z"},{"alias_kind":"pith_short_12","alias_value":"UDCFXJEXPDWZ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UDCFXJEXPDWZ4D3W","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UDCFXJEX","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:9ae3f5b7debe821da612f5aae3025333ea6732d3ead415c98fd60c954f25ba78","target":"graph","created_at":"2026-05-17T23:42:37Z","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":"A novel symplectic algorithm is proposed to solve the Maxwell-Schr\\\"odinger (M-S) system for investigating light-matter interaction. Using the fourth-order symplectic integration and fourth-order collocated differences, Maxwell-Schr\\\"odinger equations are discretized in temporal and spatial domains, respectively. The symplectic finite-difference time-domain (SFDTD) algorithm is developed for accurate and efficient study of coherent interaction between electromagnetic fields and artificial atoms. Particularly, the Dirichlet boundary condition is adopted for modeling the Rabi oscillation problem","authors_text":"Guoda Xie, Ming Fang, Wei E.I. Sha, Zhixiang Huang","cross_cats":["math.SG","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-23T12:17:40Z","title":"Simulating Maxwell-Schr\\\"odinger Equations by High-Order Symplectic FDTD Algorithm"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09589","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":"sha256:3e8b1bf369b5dfa77923bb488462f0c09174488a9da1a9b10c8fac4b60db47e6","target":"record","created_at":"2026-05-17T23:42:37Z","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":"a7229e43220c7a2b9df525c92210626bede77dc771077dcbaaff36a3fdb885fc","cross_cats_sorted":["math.SG","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-23T12:17:40Z","title_canon_sha256":"64471cf22f47ad9f8c7c2df70fff9213b7e99c3d784e3a8bdd6257451af500c0"},"schema_version":"1.0","source":{"id":"1906.09589","kind":"arxiv","version":1}},"canonical_sha256":"a0c45ba49778ed9e0f76fe09d666efdb04431ff247a84c5312023392283aeb3e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0c45ba49778ed9e0f76fe09d666efdb04431ff247a84c5312023392283aeb3e","first_computed_at":"2026-05-17T23:42:37.475399Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:37.475399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zka8psDlGuwhL5WMrrW25MqsjJA+D8WEjqnqk21ojzah5f9B01L/MnlD3W3SEiczxgXvQsaFdyz96lggKS3LBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:37.476144Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.09589","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e8b1bf369b5dfa77923bb488462f0c09174488a9da1a9b10c8fac4b60db47e6","sha256:9ae3f5b7debe821da612f5aae3025333ea6732d3ead415c98fd60c954f25ba78"],"state_sha256":"2733b9e335289c46af76eb098d6b7b9cd452f4926b64fcaea25a5ada1b0a4fe0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QcKpntKHhAj53E+SCJ7uvrBQZHRxEDjFR0UsOSQsrTmjaHr67b3oSpxYV9stBUUeJBHqegiXhKOeMFTb+snMDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T08:56:02.780105Z","bundle_sha256":"3a98af533f9e4c975433d4d57f4d7117331fcbac015493048262dc8ad5e0a8db"}}