{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:2X3T3L2Z4QBCFM3TW6WUZIBI4M","short_pith_number":"pith:2X3T3L2Z","canonical_record":{"source":{"id":"1210.8086","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-10-30T17:10:40Z","cross_cats_sorted":[],"title_canon_sha256":"8a1149f158ef8c5f3b3747867f76f6e267478d0974dff265101e7bae51e23236","abstract_canon_sha256":"4db45fc27ec6e139e352059dd3b59c4a1f3a50c5d54211382b8f3587013bf36d"},"schema_version":"1.0"},"canonical_sha256":"d5f73daf59e40222b373b7ad4ca028e311859fb3a3d439e8bf6c6134ad060858","source":{"kind":"arxiv","id":"1210.8086","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.8086","created_at":"2026-05-18T03:41:55Z"},{"alias_kind":"arxiv_version","alias_value":"1210.8086v2","created_at":"2026-05-18T03:41:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.8086","created_at":"2026-05-18T03:41:55Z"},{"alias_kind":"pith_short_12","alias_value":"2X3T3L2Z4QBC","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2X3T3L2Z4QBCFM3T","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2X3T3L2Z","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:2X3T3L2Z4QBCFM3TW6WUZIBI4M","target":"record","payload":{"canonical_record":{"source":{"id":"1210.8086","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-10-30T17:10:40Z","cross_cats_sorted":[],"title_canon_sha256":"8a1149f158ef8c5f3b3747867f76f6e267478d0974dff265101e7bae51e23236","abstract_canon_sha256":"4db45fc27ec6e139e352059dd3b59c4a1f3a50c5d54211382b8f3587013bf36d"},"schema_version":"1.0"},"canonical_sha256":"d5f73daf59e40222b373b7ad4ca028e311859fb3a3d439e8bf6c6134ad060858","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:41:55.803177Z","signature_b64":"v/41EyoeYasIIgXYFESo9LEXrDne7GwRfkRO+L+WE/BNinf4NWdK3Zyh/LUoRr/mPR/MZAvgbIoG0IQKtK2yBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5f73daf59e40222b373b7ad4ca028e311859fb3a3d439e8bf6c6134ad060858","last_reissued_at":"2026-05-18T03:41:55.802383Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:41:55.802383Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.8086","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:41:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mC0+qU4VFBVZcY95/gUHoN/1ugm//HYD48Ykarg/hrcW9zeT3iZK6YOpgO1nxuVxdSWLUrrm+dYjJWNnwO0hCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:13:04.718484Z"},"content_sha256":"26a11ad458d786b8fa437a7e4ea3b37206019105f1af5f6882ab39e123d09ba7","schema_version":"1.0","event_id":"sha256:26a11ad458d786b8fa437a7e4ea3b37206019105f1af5f6882ab39e123d09ba7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:2X3T3L2Z4QBCFM3TW6WUZIBI4M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Thermal Narrowing of the Electronic Bandwidths in Organic Molecular Semiconductors: Impact of the Crystal Thermal Expansion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Jean-Luc Br\\'edas, Veaceslav Coropceanu, Yuan Li","submitted_at":"2012-10-30T17:10:40Z","abstract_excerpt":"We report on electronic-structure calculations for the pentacene and rubrene crystals, based on experimental crystal geometries measured at different temperatures. The results are in very good agreement with angle-resolved photoelectron spectroscopy data that indicate that the widths of the valence and conduction bands in both materials become narrower at higher temperatures. Our findings strongly suggest that the thermal bandwidth narrowing in the pentacene and rubrene crystals is primarily caused by the thermal expansion of the lattice rather than by a renormalization of the transfer integra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.8086","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:41:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5TdtWbnlhDcpUhZu5zl+sMcemp4aoECIslWA+s7ivtFQb1JDyjaH3Tl5gnZVodUHsEuoCwwo+UtRdrGqHiecCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:13:04.719194Z"},"content_sha256":"55b1c4fb663b6d20bff612eddcfb31bb33c363623321c5f565fad8091bc13eea","schema_version":"1.0","event_id":"sha256:55b1c4fb663b6d20bff612eddcfb31bb33c363623321c5f565fad8091bc13eea"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2X3T3L2Z4QBCFM3TW6WUZIBI4M/bundle.json","state_url":"https://pith.science/pith/2X3T3L2Z4QBCFM3TW6WUZIBI4M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2X3T3L2Z4QBCFM3TW6WUZIBI4M/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":"2026-05-26T04:13:04Z","links":{"resolver":"https://pith.science/pith/2X3T3L2Z4QBCFM3TW6WUZIBI4M","bundle":"https://pith.science/pith/2X3T3L2Z4QBCFM3TW6WUZIBI4M/bundle.json","state":"https://pith.science/pith/2X3T3L2Z4QBCFM3TW6WUZIBI4M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2X3T3L2Z4QBCFM3TW6WUZIBI4M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2X3T3L2Z4QBCFM3TW6WUZIBI4M","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":"4db45fc27ec6e139e352059dd3b59c4a1f3a50c5d54211382b8f3587013bf36d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-10-30T17:10:40Z","title_canon_sha256":"8a1149f158ef8c5f3b3747867f76f6e267478d0974dff265101e7bae51e23236"},"schema_version":"1.0","source":{"id":"1210.8086","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.8086","created_at":"2026-05-18T03:41:55Z"},{"alias_kind":"arxiv_version","alias_value":"1210.8086v2","created_at":"2026-05-18T03:41:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.8086","created_at":"2026-05-18T03:41:55Z"},{"alias_kind":"pith_short_12","alias_value":"2X3T3L2Z4QBC","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2X3T3L2Z4QBCFM3T","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2X3T3L2Z","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:55b1c4fb663b6d20bff612eddcfb31bb33c363623321c5f565fad8091bc13eea","target":"graph","created_at":"2026-05-18T03:41:55Z","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 report on electronic-structure calculations for the pentacene and rubrene crystals, based on experimental crystal geometries measured at different temperatures. The results are in very good agreement with angle-resolved photoelectron spectroscopy data that indicate that the widths of the valence and conduction bands in both materials become narrower at higher temperatures. Our findings strongly suggest that the thermal bandwidth narrowing in the pentacene and rubrene crystals is primarily caused by the thermal expansion of the lattice rather than by a renormalization of the transfer integra","authors_text":"Jean-Luc Br\\'edas, Veaceslav Coropceanu, Yuan Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-10-30T17:10:40Z","title":"Thermal Narrowing of the Electronic Bandwidths in Organic Molecular Semiconductors: Impact of the Crystal Thermal Expansion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.8086","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":"sha256:26a11ad458d786b8fa437a7e4ea3b37206019105f1af5f6882ab39e123d09ba7","target":"record","created_at":"2026-05-18T03:41:55Z","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":"4db45fc27ec6e139e352059dd3b59c4a1f3a50c5d54211382b8f3587013bf36d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-10-30T17:10:40Z","title_canon_sha256":"8a1149f158ef8c5f3b3747867f76f6e267478d0974dff265101e7bae51e23236"},"schema_version":"1.0","source":{"id":"1210.8086","kind":"arxiv","version":2}},"canonical_sha256":"d5f73daf59e40222b373b7ad4ca028e311859fb3a3d439e8bf6c6134ad060858","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5f73daf59e40222b373b7ad4ca028e311859fb3a3d439e8bf6c6134ad060858","first_computed_at":"2026-05-18T03:41:55.802383Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:41:55.802383Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v/41EyoeYasIIgXYFESo9LEXrDne7GwRfkRO+L+WE/BNinf4NWdK3Zyh/LUoRr/mPR/MZAvgbIoG0IQKtK2yBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:41:55.803177Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.8086","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26a11ad458d786b8fa437a7e4ea3b37206019105f1af5f6882ab39e123d09ba7","sha256:55b1c4fb663b6d20bff612eddcfb31bb33c363623321c5f565fad8091bc13eea"],"state_sha256":"deb51a37f6e9daa1f93bc51f4e3653ad72d6ee751b0e9df5cade36f8575e5a6b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HARjcTShUDmJZfEfxPF1EIF06zUIVTw5F/HGfaxA2qaedSrddLY1cOZLmZZZ3Xkf5QkRcwqrA5z5LW+bytaLBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T04:13:04.723474Z","bundle_sha256":"bb25f4cbd0844dd5f7f5d49e137b241ea4bdec9dba9e5f7d6f0f588e2294cd61"}}