{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:WA7NMG5DU34O6BCZ3QHRLTHO7W","short_pith_number":"pith:WA7NMG5D","schema_version":"1.0","canonical_sha256":"b03ed61ba3a6f8ef0459dc0f15cceefdacbd04a56ba35cfb444a353ad56fb8c7","source":{"kind":"arxiv","id":"2606.24505","version":1},"attestation_state":"computed","paper":{"title":"Observation of fractality-induced topology in photonic crystals","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Bei Yan, Jing-Ming Chen, Linyun Yang, Xiang Xi, Yan Meng, Yingfeng Qi, Zhen Gao, Zhen-Xiao Zhu, Ziyao Wang","submitted_at":"2026-06-23T12:34:02Z","abstract_excerpt":"Fractal topology--achieved by integrating nontrivial topology into fractal geometries with self-similarity and non-integer dimensions--has opened new avenues for exploring topological phases of matter. Recent theoretical advances revealed a counterintuitive fractal topology: fractality itself can induce nontrivial topology in an otherwise trivial system. Here, we report the first experimental observation of fractality-induced topology in a tight-binding-like photonic crystal, without relying on traditional driving mechanisms such as magnetic fields, staggered hopping, or spin-orbit coupling. W"},"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":"2606.24505","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-06-23T12:34:02Z","cross_cats_sorted":[],"title_canon_sha256":"fc8ed487aed09f31cae5a51faffc90c4671ae5c9f6a8c757483559c094476db6","abstract_canon_sha256":"119de453fa3c984aed7572e783bc43b7efc5f88e1f1297d1a483b08f9e53eeca"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-24T01:15:32.408031Z","signature_b64":"IeeQcRz5inRLGnvTCHuUWAUbvioGXO3xsLcd0pf809wz9E6MJI3iTm6Dge75TodBOSHOFXUynxlgfM/7LOK3Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b03ed61ba3a6f8ef0459dc0f15cceefdacbd04a56ba35cfb444a353ad56fb8c7","last_reissued_at":"2026-06-24T01:15:32.407643Z","signature_status":"signed_v1","first_computed_at":"2026-06-24T01:15:32.407643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of fractality-induced topology in photonic crystals","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Bei Yan, Jing-Ming Chen, Linyun Yang, Xiang Xi, Yan Meng, Yingfeng Qi, Zhen Gao, Zhen-Xiao Zhu, Ziyao Wang","submitted_at":"2026-06-23T12:34:02Z","abstract_excerpt":"Fractal topology--achieved by integrating nontrivial topology into fractal geometries with self-similarity and non-integer dimensions--has opened new avenues for exploring topological phases of matter. Recent theoretical advances revealed a counterintuitive fractal topology: fractality itself can induce nontrivial topology in an otherwise trivial system. Here, we report the first experimental observation of fractality-induced topology in a tight-binding-like photonic crystal, without relying on traditional driving mechanisms such as magnetic fields, staggered hopping, or spin-orbit coupling. W"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.24505","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.24505/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2606.24505","created_at":"2026-06-24T01:15:32.407704+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.24505v1","created_at":"2026-06-24T01:15:32.407704+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.24505","created_at":"2026-06-24T01:15:32.407704+00:00"},{"alias_kind":"pith_short_12","alias_value":"WA7NMG5DU34O","created_at":"2026-06-24T01:15:32.407704+00:00"},{"alias_kind":"pith_short_16","alias_value":"WA7NMG5DU34O6BCZ","created_at":"2026-06-24T01:15:32.407704+00:00"},{"alias_kind":"pith_short_8","alias_value":"WA7NMG5D","created_at":"2026-06-24T01:15:32.407704+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/WA7NMG5DU34O6BCZ3QHRLTHO7W","json":"https://pith.science/pith/WA7NMG5DU34O6BCZ3QHRLTHO7W.json","graph_json":"https://pith.science/api/pith-number/WA7NMG5DU34O6BCZ3QHRLTHO7W/graph.json","events_json":"https://pith.science/api/pith-number/WA7NMG5DU34O6BCZ3QHRLTHO7W/events.json","paper":"https://pith.science/paper/WA7NMG5D"},"agent_actions":{"view_html":"https://pith.science/pith/WA7NMG5DU34O6BCZ3QHRLTHO7W","download_json":"https://pith.science/pith/WA7NMG5DU34O6BCZ3QHRLTHO7W.json","view_paper":"https://pith.science/paper/WA7NMG5D","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.24505&json=true","fetch_graph":"https://pith.science/api/pith-number/WA7NMG5DU34O6BCZ3QHRLTHO7W/graph.json","fetch_events":"https://pith.science/api/pith-number/WA7NMG5DU34O6BCZ3QHRLTHO7W/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WA7NMG5DU34O6BCZ3QHRLTHO7W/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WA7NMG5DU34O6BCZ3QHRLTHO7W/action/storage_attestation","attest_author":"https://pith.science/pith/WA7NMG5DU34O6BCZ3QHRLTHO7W/action/author_attestation","sign_citation":"https://pith.science/pith/WA7NMG5DU34O6BCZ3QHRLTHO7W/action/citation_signature","submit_replication":"https://pith.science/pith/WA7NMG5DU34O6BCZ3QHRLTHO7W/action/replication_record"}},"created_at":"2026-06-24T01:15:32.407704+00:00","updated_at":"2026-06-24T01:15:32.407704+00:00"}