{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:F4FZTJPE2P4HOILCMKUBZGD5PA","merge_version":"pith-open-graph-merge-v1","event_count":3,"valid_event_count":3,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"b053b9cb53d2d30db4a39cad85473c4ad493f2dd4fb415e2bb0d03973c5f8d81","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-07-09T09:39:20Z","title_canon_sha256":"92895d3f26290778a72a8bbdd743d4f91f5c899b0c1de1288de31461dc5acf38"},"schema_version":"1.0","source":{"id":"2607.08295","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.08295","created_at":"2026-07-10T01:19:32Z"},{"alias_kind":"arxiv_version","alias_value":"2607.08295v1","created_at":"2026-07-10T01:19:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.08295","created_at":"2026-07-10T01:19:32Z"},{"alias_kind":"pith_short_12","alias_value":"F4FZTJPE2P4H","created_at":"2026-07-10T01:19:32Z"},{"alias_kind":"pith_short_16","alias_value":"F4FZTJPE2P4HOILC","created_at":"2026-07-10T01:19:32Z"},{"alias_kind":"pith_short_8","alias_value":"F4FZTJPE","created_at":"2026-07-10T01:19:32Z"}],"graph_snapshots":[{"event_id":"sha256:7bb93fd55276dbd746726104caf850a3d8da3a8ad639245352e15737d311b25c","target":"graph","created_at":"2026-07-10T01:19:32Z","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/2607.08295/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Reflection of waves at interfaces is conventionally governed by Snell's law, which follows from conservation of momentum parallel to the interface. Here we show experimentally that caustic spin-wave beams in anisotropic media obey a fundamentally different reflection mechanism. Applying time-resolved Kerr microscopy to a yttrium iron garnet waveguide, we observe that reflected beams are selected by transitions between caustic points on the anisotropic iso-frequency contour rather than by momentum conservation. As a consequence, the reflected carrier wave vector and wavefront orientation exhibi","authors_text":"Christian Back, Franz Vilsmeier","cross_cats":["physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-07-09T09:39:20Z","title":"Anomalous Reflection of Caustic Spin-Wave Beams in a Magnonic Waveguide"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.08295","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:be264f88c853f9a49415bbe308d773c167010448a89a81c81228ee5085547211","target":"record","created_at":"2026-07-10T01:19:32Z","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":"b053b9cb53d2d30db4a39cad85473c4ad493f2dd4fb415e2bb0d03973c5f8d81","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-07-09T09:39:20Z","title_canon_sha256":"92895d3f26290778a72a8bbdd743d4f91f5c899b0c1de1288de31461dc5acf38"},"schema_version":"1.0","source":{"id":"2607.08295","kind":"arxiv","version":1}},"canonical_sha256":"2f0b99a5e4d3f877216262a81c987d781be7e97c372a46a652a32d8bef08212e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2f0b99a5e4d3f877216262a81c987d781be7e97c372a46a652a32d8bef08212e","first_computed_at":"2026-07-10T01:19:32.096706Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-10T01:19:32.096706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o/z9FQ1u3h0VrYNfzIbsopiDEdV53bSi3uvujXvB1SEIoTHTMnMai9Vmdvg5QtdYwbqALX2RGDo9XutcySAGDg==","signature_status":"signed_v1","signed_at":"2026-07-10T01:19:32.097104Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.08295","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be264f88c853f9a49415bbe308d773c167010448a89a81c81228ee5085547211","sha256:7bb93fd55276dbd746726104caf850a3d8da3a8ad639245352e15737d311b25c","sha256:8a82816a0c1885935cbce0488d7feca608dc429a85a1e0ab1727a154002ee93d"],"state_sha256":"67d4456c8f4e276b3c87ea57c3c0fa8797ac0ee9f2d8787c13ae68b91a40cca7"}