{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:CHSDGJ72FCLZXDIFJSSWNGH7H7","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":"5868800e45a71db79b4b047dfa9710e8543b3753e8707367633a8b6bf5add2f7","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-03-27T15:03:21Z","title_canon_sha256":"e4b296bf105c8a6e360b52b39a458da7ad9bf7d6a9e5268c1374e610dfdd056e"},"schema_version":"1.0","source":{"id":"2403.18657","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.18657","created_at":"2026-07-05T09:57:40Z"},{"alias_kind":"arxiv_version","alias_value":"2403.18657v3","created_at":"2026-07-05T09:57:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.18657","created_at":"2026-07-05T09:57:40Z"},{"alias_kind":"pith_short_12","alias_value":"CHSDGJ72FCLZ","created_at":"2026-07-05T09:57:40Z"},{"alias_kind":"pith_short_16","alias_value":"CHSDGJ72FCLZXDIF","created_at":"2026-07-05T09:57:40Z"},{"alias_kind":"pith_short_8","alias_value":"CHSDGJ72","created_at":"2026-07-05T09:57:40Z"}],"graph_snapshots":[{"event_id":"sha256:421008bbfa62fa9695938d262c2c957a232fdd31637c6b65b1b16a0c32352bcc","target":"graph","created_at":"2026-07-05T09:57:40Z","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/2403.18657/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The vast repository of van der Waals (vdW) materials supporting polaritons offers numerous possibilities to tailor electromagnetic waves at the nanoscale. The development of twistoptics - the modulation of the optical properties by twisting stacks of vdW materials - enables directional propagation of phonon polaritons (PhPs) along a single spatial direction, known as canalization. Here we demonstrate a complementary type of directional propagation of polaritons by reporting the visualization of unidirectional ray polaritons (URPs). They arise naturally in twisted hyperbolic stacks with very di","authors_text":"A. I. F. Tresguerres-Mata, A. Paarmann, A. S. Senerath, A. Tarazaga Mart\\'in-Luengo, A.Y. Nikitin, C. Lanza, E. Ter\\'an-Garc\\'ia, G. \\'Alvarez-P\\'erez, G. Carini, J. \\'Alvarez-Cuervo, J.D. Caldwell, J. Mart\\'in-S\\'anchez, J.M. De Teresa, J. M. Klopf, K. Diaz-Granados, L. \\'Alvarez-Tomillo, L. Herrer, L.M. Eng, M. Obst, M. Wolf, N. S. Mueller, P. Alonso-Gonz\\'alez, R. Kowalski, S.C. Kehr, S. Dixit, S. Wasserroth, T. Beechem, T.G. Folland","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-03-27T15:03:21Z","title":"Unidirectional Ray Polaritons in Twisted Asymmetric Stacks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.18657","kind":"arxiv","version":3},"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":"sha256:24aa83f1103be34aab1eb8165625743b1acac0807f2c0b3b14d53e21ca38a9f4","target":"record","created_at":"2026-07-05T09:57:40Z","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":"5868800e45a71db79b4b047dfa9710e8543b3753e8707367633a8b6bf5add2f7","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-03-27T15:03:21Z","title_canon_sha256":"e4b296bf105c8a6e360b52b39a458da7ad9bf7d6a9e5268c1374e610dfdd056e"},"schema_version":"1.0","source":{"id":"2403.18657","kind":"arxiv","version":3}},"canonical_sha256":"11e43327fa28979b8d054ca56698ff3fc7d7821273fe996d967b9ef0005f534e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11e43327fa28979b8d054ca56698ff3fc7d7821273fe996d967b9ef0005f534e","first_computed_at":"2026-07-05T09:57:40.940670Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:57:40.940670Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HLTy+KaCFWKXBW7GL0s/rUqyyWEI0iA1aPQJ9lNwAp85tME951Mm+8/GQ7/V3yGfZ3Oip+Mg3GcaYUkUdxJPBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:57:40.941700Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.18657","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:24aa83f1103be34aab1eb8165625743b1acac0807f2c0b3b14d53e21ca38a9f4","sha256:421008bbfa62fa9695938d262c2c957a232fdd31637c6b65b1b16a0c32352bcc"],"state_sha256":"d6352d1033104d1c828a8b8f7ed72d1a351e3c08d70fa6557cda444eb3d3d484"}