{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:H6SUUH6IFZBOAUFLU2ZLMU4FVB","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":"3b34c112ab8c3213b425b6e124294358593ad1f79b4f61f3ec6fb48e5bb9955d","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"quant-ph","submitted_at":"2004-08-23T13:23:40Z","title_canon_sha256":"0afdaeeee9c5ed01c520097a89c5686d7ce75c36afd1809e310b1d87d7d1a2e6"},"schema_version":"1.0","source":{"id":"quant-ph/0408145","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0408145","created_at":"2026-07-04T16:50:23Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0408145v2","created_at":"2026-07-04T16:50:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0408145","created_at":"2026-07-04T16:50:23Z"},{"alias_kind":"pith_short_12","alias_value":"H6SUUH6IFZBO","created_at":"2026-07-04T16:50:23Z"},{"alias_kind":"pith_short_16","alias_value":"H6SUUH6IFZBOAUFL","created_at":"2026-07-04T16:50:23Z"},{"alias_kind":"pith_short_8","alias_value":"H6SUUH6I","created_at":"2026-07-04T16:50:23Z"}],"graph_snapshots":[{"event_id":"sha256:b9a9eebd068d699cb3ddebda948661efdd51e7ffacf87f9a8312c5544f431c38","target":"graph","created_at":"2026-07-04T16:50:23Z","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/quant-ph/0408145/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"It is demonstrated that the propagation of electro-magnetic waves in an appropriately designed wave-guide is (for large wave-lengths) analogous to that within a curved space-time -- such as around a black hole. As electro-magnetic radiation (e.g., micro-weaves) can be controlled, amplified, and detected (with present-day technology) much easier than sound, for example, we propose a set-up for the experimental verification of the Hawking effect. Apart from experimentally testing this striking prediction, this would facilitate the investigation of the trans-Planckian problem. PACS: 04.70.Dy, 04.","authors_text":"Ralf Sch\\\"utzhold, William G. Unruh","cross_cats":["gr-qc"],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2004-08-23T13:23:40Z","title":"Hawking radiation in an electro-magnetic wave-guide?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0408145","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":"sha256:18c5bf380c60360bf14bad7f425b271dd3a15d6b1074be30dc684a299626c205","target":"record","created_at":"2026-07-04T16:50:23Z","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":"3b34c112ab8c3213b425b6e124294358593ad1f79b4f61f3ec6fb48e5bb9955d","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"quant-ph","submitted_at":"2004-08-23T13:23:40Z","title_canon_sha256":"0afdaeeee9c5ed01c520097a89c5686d7ce75c36afd1809e310b1d87d7d1a2e6"},"schema_version":"1.0","source":{"id":"quant-ph/0408145","kind":"arxiv","version":2}},"canonical_sha256":"3fa54a1fc82e42e050aba6b2b65385a86b13c9790f063a6cd1241e58934b8cc1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3fa54a1fc82e42e050aba6b2b65385a86b13c9790f063a6cd1241e58934b8cc1","first_computed_at":"2026-07-04T16:50:23.447349Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:50:23.447349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tq0O+GOUSmT3GNNRVsWoXvwm/ne88rr2o7ljBuTxsrKLmLolEkiAm80T3nhasNloD1FcF9hwNeHMhNICO1vyCw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:50:23.447695Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0408145","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:18c5bf380c60360bf14bad7f425b271dd3a15d6b1074be30dc684a299626c205","sha256:b9a9eebd068d699cb3ddebda948661efdd51e7ffacf87f9a8312c5544f431c38"],"state_sha256":"8b0f43a3d957d0e511ca068a8c4f0a4c27d7c334682fe96b8fe59358b3c7475a"}