{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:34NFPW7ICFHVIZ3VHWV6WKQMA6","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":"9a32a4b56fcb1c237c07344f6212ad60bf75d0c886d6270f5b202aa21e886d0e","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-06-23T07:18:09Z","title_canon_sha256":"feb28d6c435692fe4d7f6280b70625d68baf8944b8a9d3fd88a01ae873748c82"},"schema_version":"1.0","source":{"id":"2506.18350","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.18350","created_at":"2026-07-05T11:25:49Z"},{"alias_kind":"arxiv_version","alias_value":"2506.18350v1","created_at":"2026-07-05T11:25:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.18350","created_at":"2026-07-05T11:25:49Z"},{"alias_kind":"pith_short_12","alias_value":"34NFPW7ICFHV","created_at":"2026-07-05T11:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"34NFPW7ICFHVIZ3V","created_at":"2026-07-05T11:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"34NFPW7I","created_at":"2026-07-05T11:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:8ba091634f239fe4c5d8f976c0d06032451747b52ba20b108aba796032d91883","target":"graph","created_at":"2026-07-05T11:25:49Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2506.18350/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the charge dynamics of Ta$_2$Pd$_3$Te$_5$ using temperature-dependent optical spectroscopy with polarized light. We observe a metal-insulator transition characterized by the collapse of Drude response and the emergence of sharp and narrow absorption peaks at low temperatures. Unlike previous excitonic insulator candidates such as TiSe$_2$ and Ta$_2$NiSe$_5$, where the excitonic order is intertwined with charge density wave or structural instabilities, the sharp features in Ta$_2$Pd$_3$Te$_5$ point to intrinsic excitonic excitations associated with ultra-flat bands driven by many-b","authors_text":"Bing Xu, Chenhao Liang, Lincong Zheng, Shaohui Yi, Sheng Zhang, Xianggang Qiu, Xiutong Deng, Yongjie Xie, Youguo Shi, Yubiao Wu, Yujie Wang, Zhijun Wang, Zhiyu Liao","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-06-23T07:18:09Z","title":"Optical Excitations of Flat Bands Induced by Exciton Condensation in Ta$_2$Pd$_3$Te$_{5}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.18350","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":"sha256:695924989121417031adb5e563e60e3471b77641ded32360b9707ffe11aaa175","target":"record","created_at":"2026-07-05T11:25:49Z","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":"9a32a4b56fcb1c237c07344f6212ad60bf75d0c886d6270f5b202aa21e886d0e","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-06-23T07:18:09Z","title_canon_sha256":"feb28d6c435692fe4d7f6280b70625d68baf8944b8a9d3fd88a01ae873748c82"},"schema_version":"1.0","source":{"id":"2506.18350","kind":"arxiv","version":1}},"canonical_sha256":"df1a57dbe8114f5467753dabeb2a0c078d8db2705b15eef99429c6ac891af8fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"df1a57dbe8114f5467753dabeb2a0c078d8db2705b15eef99429c6ac891af8fb","first_computed_at":"2026-07-05T11:25:49.066992Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:25:49.066992Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gaWWKUFTrGUe8Mzbp+thu9yP3KGlWeWrGE3d1pjcISronu1JkalR7lZxOYDgaGE6TZGdFbqPWIkvkp8sOxEBDg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:25:49.067488Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.18350","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:695924989121417031adb5e563e60e3471b77641ded32360b9707ffe11aaa175","sha256:8ba091634f239fe4c5d8f976c0d06032451747b52ba20b108aba796032d91883"],"state_sha256":"78f22de099d4ba2e52fef8a8f9150853f21f7c40a8d6fa670fcf72c70be4b931"}