{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:FVQFA2TILTTF5KB36MIYASGKUI","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":"1fc57ef9b4e34902eddf97cf87f13cc7c33021acb0837f050d1f51311f18d631","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci","physics.comp-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-01-16T20:17:18Z","title_canon_sha256":"dc40ef6586296d4ef5532b463c892a93c6183624805a7e974ba4397624c557dc"},"schema_version":"1.0","source":{"id":"1601.04205","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.04205","created_at":"2026-05-18T01:05:12Z"},{"alias_kind":"arxiv_version","alias_value":"1601.04205v2","created_at":"2026-05-18T01:05:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.04205","created_at":"2026-05-18T01:05:12Z"},{"alias_kind":"pith_short_12","alias_value":"FVQFA2TILTTF","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FVQFA2TILTTF5KB3","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FVQFA2TI","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:44460a7c0759b49db16941048822dec18506f41819dbadbf0a6505ba45bfac91","target":"graph","created_at":"2026-05-18T01:05:12Z","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":"In the present study, a series of planar poly(p-phenylene) (PPP) oligomers with n phenyl rings (n = 1 - 20), designated as n-PP, are taken as finite-size models of the narrowest armchair graphene nanoribbons with hydrogen passivation. The singlet-triplet energy gap, vertical ionization potential, vertical electron affinity, fundamental gap, optical gap, and exciton binding energy of n-PP are calculated using Kohn-Sham density functional theory and time-dependent density functional theory with various exchange-correlation density functionals. The ground state of n-PP is shown to be singlet for ","authors_text":"Chia-Nan Yeh, Jeng-Da Chai, Pei-Yin Lee","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci","physics.comp-ph","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-01-16T20:17:18Z","title":"Electronic and Optical Properties of the Narrowest Armchair Graphene Nanoribbons Studied by Density Functional Methods"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.04205","kind":"arxiv","version":2},"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:f88418dccae2f6dbe0f8808d331f869ceae1ed4003b628d6e008a43c4f1fccb9","target":"record","created_at":"2026-05-18T01:05:12Z","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":"1fc57ef9b4e34902eddf97cf87f13cc7c33021acb0837f050d1f51311f18d631","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci","physics.comp-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-01-16T20:17:18Z","title_canon_sha256":"dc40ef6586296d4ef5532b463c892a93c6183624805a7e974ba4397624c557dc"},"schema_version":"1.0","source":{"id":"1601.04205","kind":"arxiv","version":2}},"canonical_sha256":"2d60506a685ce65ea83bf3118048caa234b9745173eb0919bc1f11e491c0264d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d60506a685ce65ea83bf3118048caa234b9745173eb0919bc1f11e491c0264d","first_computed_at":"2026-05-18T01:05:12.618478Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:12.618478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZRNmRhssYRtcjETsx06hQSePkbq8zQZ2iO5Y7IzARyLF8cPTiATlzJUO9fyGNUmGZg030ltBnr8X/yt9wvBTDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:12.619412Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.04205","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f88418dccae2f6dbe0f8808d331f869ceae1ed4003b628d6e008a43c4f1fccb9","sha256:44460a7c0759b49db16941048822dec18506f41819dbadbf0a6505ba45bfac91"],"state_sha256":"ffa601128e327d3af5fd0a3b477576ede39bfcf86a08ddf9f28b2e2bf84b53e2"}