{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:L3U5B3SDLBSEQNCGUHYNA5UGPH","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":"5fd41e468760f153d7c25d3a717668c0cb789c74669ad18c7b4b5fe4891e5f3c","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-03-12T14:48:02Z","title_canon_sha256":"4f6796e0983530be2dbcd03246fc2b9dfdb7e9970efbe6b6c21eac1ca81e6f57"},"schema_version":"1.0","source":{"id":"1903.04965","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.04965","created_at":"2026-05-17T23:45:27Z"},{"alias_kind":"arxiv_version","alias_value":"1903.04965v1","created_at":"2026-05-17T23:45:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.04965","created_at":"2026-05-17T23:45:27Z"},{"alias_kind":"pith_short_12","alias_value":"L3U5B3SDLBSE","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"L3U5B3SDLBSEQNCG","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"L3U5B3SD","created_at":"2026-05-18T12:33:21Z"}],"graph_snapshots":[{"event_id":"sha256:19789679f2c0132a13057919850b2aef3345b9b626c7f0c42525027084559ac1","target":"graph","created_at":"2026-05-17T23:45:27Z","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":"Current and future interferometeric gravitational-wave detectors are limited predominantly by shot noise at high frequencies. Shot noise is reduced by introducing arm cavities and signal recycling, however, there exists a tradeoff between the peak sensitivity and bandwidth. This comes from the accumulated phase of signal sidebands when propagating inside the arm cavities. One idea is to cancel such a phase by introducing an unstable optomechanical filter. The original design proposed in [Phys.~Rev.~Lett.~{\\bf 115},~211104 (2015)] requires an additional optomechanical filter coupled externally ","authors_text":"Andreas Freise, Denis Martynov, Haixing Miao, Joe Bentley, Philip Jones","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-03-12T14:48:02Z","title":"Converting the signal-recycling cavity into an unstable optomechanical filter to enhance the detection bandwidth of gravitational-wave detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.04965","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":"sha256:864ae6cf804fbf21a9bbebb65bc7935ff10ceafe7045247d0a4c34dc78a379bd","target":"record","created_at":"2026-05-17T23:45:27Z","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":"5fd41e468760f153d7c25d3a717668c0cb789c74669ad18c7b4b5fe4891e5f3c","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-03-12T14:48:02Z","title_canon_sha256":"4f6796e0983530be2dbcd03246fc2b9dfdb7e9970efbe6b6c21eac1ca81e6f57"},"schema_version":"1.0","source":{"id":"1903.04965","kind":"arxiv","version":1}},"canonical_sha256":"5ee9d0ee435864483446a1f0d0768679f71153afc8e5ab458641950e34b992c5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5ee9d0ee435864483446a1f0d0768679f71153afc8e5ab458641950e34b992c5","first_computed_at":"2026-05-17T23:45:27.376389Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:27.376389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4Tb5Y08gof8QlQZ3ptjXDr3RXn4aVzdcjPRDCin3SxQFrSnaBCHEtsKDfbZLbBYxTu6b2ZgC2VjBgZPTohC4Aw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:27.376852Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.04965","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:864ae6cf804fbf21a9bbebb65bc7935ff10ceafe7045247d0a4c34dc78a379bd","sha256:19789679f2c0132a13057919850b2aef3345b9b626c7f0c42525027084559ac1"],"state_sha256":"c1d9ec0f5b0861884bd7058bf5407b9b5f9000605d82afe35ec25875269c6030"}