{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:ZCAEJDAOAS2MOVQ2H4SGT4KDNS","short_pith_number":"pith:ZCAEJDAO","schema_version":"1.0","canonical_sha256":"c880448c0e04b4c7561a3f2469f1436c97eca82d731919e1569ab3835e97f976","source":{"kind":"arxiv","id":"1105.3766","version":2},"attestation_state":"computed","paper":{"title":"Ab initio calculation of UV-Vis absorption spectra of a single molecule chlorophyll a: Comparison study between RHF/CIS, TDDFT, and semi-empirical methods","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"physics.chem-ph","authors_text":"Sparisoma Viridi, Veinardi Suendo","submitted_at":"2011-05-19T00:14:42Z","abstract_excerpt":"Chlorophyll a is one the most abundant pigment on Earth that responsible for trapping the light energy to perform photosynthesis in green plants. This molecule is a metal-complex that consists of a porphyrin ring with high symmetry that acts as ligands with magnesium as the central ion. Chlorophyll a has been studied for many years from different point of views for both experimental and theoretical interests. In this study, the restricted Hartree-Fock configuration interaction single (RHF/CIS), time-dependent density functional theory (TDDFT) and some semi-empirical methods (CNDO/s and ZINDO) "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1105.3766","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"physics.chem-ph","submitted_at":"2011-05-19T00:14:42Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"1c3836304081f1bb8bce569788e55046d68f594c0bafe49e9865b7993302b5cf","abstract_canon_sha256":"e9d066b9eefaf57e66a7f6c80feb208a0138867ac8172c41ca2803a8986e71d5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:59:48.668145Z","signature_b64":"M0uxbbMGgRXzR5FOhAHzVINW+Dnv+YCFuiLLG9bZohFjYOBtYP6TYGr8BEV+29OenGfDJMV/+BTVVM8X7sEaCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c880448c0e04b4c7561a3f2469f1436c97eca82d731919e1569ab3835e97f976","last_reissued_at":"2026-05-18T02:59:48.667189Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:59:48.667189Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Ab initio calculation of UV-Vis absorption spectra of a single molecule chlorophyll a: Comparison study between RHF/CIS, TDDFT, and semi-empirical methods","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"physics.chem-ph","authors_text":"Sparisoma Viridi, Veinardi Suendo","submitted_at":"2011-05-19T00:14:42Z","abstract_excerpt":"Chlorophyll a is one the most abundant pigment on Earth that responsible for trapping the light energy to perform photosynthesis in green plants. This molecule is a metal-complex that consists of a porphyrin ring with high symmetry that acts as ligands with magnesium as the central ion. Chlorophyll a has been studied for many years from different point of views for both experimental and theoretical interests. In this study, the restricted Hartree-Fock configuration interaction single (RHF/CIS), time-dependent density functional theory (TDDFT) and some semi-empirical methods (CNDO/s and ZINDO) "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.3766","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1105.3766","created_at":"2026-05-18T02:59:48.667374+00:00"},{"alias_kind":"arxiv_version","alias_value":"1105.3766v2","created_at":"2026-05-18T02:59:48.667374+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.3766","created_at":"2026-05-18T02:59:48.667374+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZCAEJDAOAS2M","created_at":"2026-05-18T12:26:47.523578+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZCAEJDAOAS2MOVQ2","created_at":"2026-05-18T12:26:47.523578+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZCAEJDAO","created_at":"2026-05-18T12:26:47.523578+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZCAEJDAOAS2MOVQ2H4SGT4KDNS","json":"https://pith.science/pith/ZCAEJDAOAS2MOVQ2H4SGT4KDNS.json","graph_json":"https://pith.science/api/pith-number/ZCAEJDAOAS2MOVQ2H4SGT4KDNS/graph.json","events_json":"https://pith.science/api/pith-number/ZCAEJDAOAS2MOVQ2H4SGT4KDNS/events.json","paper":"https://pith.science/paper/ZCAEJDAO"},"agent_actions":{"view_html":"https://pith.science/pith/ZCAEJDAOAS2MOVQ2H4SGT4KDNS","download_json":"https://pith.science/pith/ZCAEJDAOAS2MOVQ2H4SGT4KDNS.json","view_paper":"https://pith.science/paper/ZCAEJDAO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1105.3766&json=true","fetch_graph":"https://pith.science/api/pith-number/ZCAEJDAOAS2MOVQ2H4SGT4KDNS/graph.json","fetch_events":"https://pith.science/api/pith-number/ZCAEJDAOAS2MOVQ2H4SGT4KDNS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZCAEJDAOAS2MOVQ2H4SGT4KDNS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZCAEJDAOAS2MOVQ2H4SGT4KDNS/action/storage_attestation","attest_author":"https://pith.science/pith/ZCAEJDAOAS2MOVQ2H4SGT4KDNS/action/author_attestation","sign_citation":"https://pith.science/pith/ZCAEJDAOAS2MOVQ2H4SGT4KDNS/action/citation_signature","submit_replication":"https://pith.science/pith/ZCAEJDAOAS2MOVQ2H4SGT4KDNS/action/replication_record"}},"created_at":"2026-05-18T02:59:48.667374+00:00","updated_at":"2026-05-18T02:59:48.667374+00:00"}