{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:NWNFVUIP2NBTYR4NRXT6XCJQNG","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":"c3d54a88c1a610b70ff4d6936e962ef0fb8bd9475f0b78a5e7809f529a06e7b7","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-03-15T11:38:17Z","title_canon_sha256":"91ce2fa39bb2e69ac7df0252040be6a4af99358e7c97ba2cf990e8bce52e9084"},"schema_version":"1.0","source":{"id":"1703.05091","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.05091","created_at":"2026-05-18T00:43:15Z"},{"alias_kind":"arxiv_version","alias_value":"1703.05091v2","created_at":"2026-05-18T00:43:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.05091","created_at":"2026-05-18T00:43:15Z"},{"alias_kind":"pith_short_12","alias_value":"NWNFVUIP2NBT","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"NWNFVUIP2NBTYR4N","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"NWNFVUIP","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:63580e72c9a4525703a0774763923b3a58b70194e31151bdec0834517dc49cd2","target":"graph","created_at":"2026-05-18T00:43:15Z","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":"An experimental setup of three coupled $\\mathcal{PT}$-symmetric wave guides showing the characteristics of a third-order exceptional point (EP3) has been investigated in an idealized model of three delta-functions wave guides in W.~D. Heiss and G.~Wunner, J. Phys. A 49, 495303 (2016). Here we extend these investigations to realistic, extended wave guide systems. We place major focus on the strong parameter sensitivity rendering the discovery of an EP3 a challenging task. We also investigate the vicinity of the EP3 for further branch points of either cubic or square root type behavior.","authors_text":"G\\\"unter Wunner, Holger Cartarius, Jan Schnabel, J\\\"org Main, Walter Dieter Heiss","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-03-15T11:38:17Z","title":"$\\mathcal{PT}$-symmetric wave guide system with evidence of a third-order exceptional point"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.05091","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":"sha256:482990237b8e7b7a55f7390bca9d13f511f034de8522988ff422d30b21c74b77","target":"record","created_at":"2026-05-18T00:43:15Z","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":"c3d54a88c1a610b70ff4d6936e962ef0fb8bd9475f0b78a5e7809f529a06e7b7","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-03-15T11:38:17Z","title_canon_sha256":"91ce2fa39bb2e69ac7df0252040be6a4af99358e7c97ba2cf990e8bce52e9084"},"schema_version":"1.0","source":{"id":"1703.05091","kind":"arxiv","version":2}},"canonical_sha256":"6d9a5ad10fd3433c478d8de7eb893069a344f12c4cc17d0ad8a30d6832543866","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d9a5ad10fd3433c478d8de7eb893069a344f12c4cc17d0ad8a30d6832543866","first_computed_at":"2026-05-18T00:43:15.575185Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:15.575185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E0rGhh2+VxrfDRrayZJr51jTjUbgnrkCEFx66ZYUteW9FGpcNdkY5fZG9nbm83O+Wp9Vi0A4GkmC3WTsVsUUAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:15.575845Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.05091","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:482990237b8e7b7a55f7390bca9d13f511f034de8522988ff422d30b21c74b77","sha256:63580e72c9a4525703a0774763923b3a58b70194e31151bdec0834517dc49cd2"],"state_sha256":"e3ec469bd36a741cbd7af212df808f02ec5027c6de559045917cae6f7d1282d6"}