{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:LY2L2RNOPQOMSBENFLVPJGC2T4","short_pith_number":"pith:LY2L2RNO","canonical_record":{"source":{"id":"0910.2716","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-10-14T21:39:32Z","cross_cats_sorted":[],"title_canon_sha256":"834385f61ee9e9698e335154c4528cfc18d0e42b6e2db8b08be6a61219bbe941","abstract_canon_sha256":"33bfc4d1d00e861d521aa4dc2438d69ebc5ab1a427cab02d828d51bf3bdf64a0"},"schema_version":"1.0"},"canonical_sha256":"5e34bd45ae7c1cc9048d2aeaf4985a9f1a5fea38094e6f7ae036ef9c6b893812","source":{"kind":"arxiv","id":"0910.2716","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.2716","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"arxiv_version","alias_value":"0910.2716v1","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.2716","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"pith_short_12","alias_value":"LY2L2RNOPQOM","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"pith_short_16","alias_value":"LY2L2RNOPQOMSBEN","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"pith_short_8","alias_value":"LY2L2RNO","created_at":"2026-07-04T17:21:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:LY2L2RNOPQOMSBENFLVPJGC2T4","target":"record","payload":{"canonical_record":{"source":{"id":"0910.2716","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-10-14T21:39:32Z","cross_cats_sorted":[],"title_canon_sha256":"834385f61ee9e9698e335154c4528cfc18d0e42b6e2db8b08be6a61219bbe941","abstract_canon_sha256":"33bfc4d1d00e861d521aa4dc2438d69ebc5ab1a427cab02d828d51bf3bdf64a0"},"schema_version":"1.0"},"canonical_sha256":"5e34bd45ae7c1cc9048d2aeaf4985a9f1a5fea38094e6f7ae036ef9c6b893812","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:21:33.641142Z","signature_b64":"G/KG5LuNdgzz9u9O1dQfu1ijLGo3POCp4b2cW9ejGGW1OoOJ3VxE5WVwaHU6TFwXMeofK/TN705gms0IIyxCDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e34bd45ae7c1cc9048d2aeaf4985a9f1a5fea38094e6f7ae036ef9c6b893812","last_reissued_at":"2026-07-04T17:21:33.640744Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:21:33.640744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.2716","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:21:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+LtkFSSbWeD5igZZeZG9dLDqSlqNE7h6gJ42LfcqTAFP1BgJzLQ3+vuAUnr3bY8fkjiax7KmBRfr3pU0D0zYCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:18:01.388974Z"},"content_sha256":"f6af6824e4be09d06a49d62b395c577ce313aaa46752e90859ee09014d729f86","schema_version":"1.0","event_id":"sha256:f6af6824e4be09d06a49d62b395c577ce313aaa46752e90859ee09014d729f86"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:LY2L2RNOPQOMSBENFLVPJGC2T4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A General Approach to Optomechanical Parametric Instabilities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"L. Barsotti, M. Evans, P. Fritschel","submitted_at":"2009-10-14T21:39:32Z","abstract_excerpt":"We present a simple feedback description of parametric instabilities which can be applied to a variety of optical systems. Parametric instabilities are of particular interest to the field of gravitational-wave interferometry where high mechanical quality factors and a large amount of stored optical power have the potential for instability. In our use of Advanced LIGO as an example application, we find that parametric instabilities, if left unaddressed, present a potential threat to the stability of high-power operation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.2716","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0910.2716/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:21:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l84F1tH2cbD25V0G8qqMiRGBCwg8iM0S4YS7BznqapHUUNrFdXeyPeo/H536gP40DZOR9T3hZj/g8WoB272UBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:18:01.389346Z"},"content_sha256":"06e20b6150b6505f50833cb975bdcd0036d3af87523186cf25e36ab833504184","schema_version":"1.0","event_id":"sha256:06e20b6150b6505f50833cb975bdcd0036d3af87523186cf25e36ab833504184"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LY2L2RNOPQOMSBENFLVPJGC2T4/bundle.json","state_url":"https://pith.science/pith/LY2L2RNOPQOMSBENFLVPJGC2T4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LY2L2RNOPQOMSBENFLVPJGC2T4/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-07T14:18:01Z","links":{"resolver":"https://pith.science/pith/LY2L2RNOPQOMSBENFLVPJGC2T4","bundle":"https://pith.science/pith/LY2L2RNOPQOMSBENFLVPJGC2T4/bundle.json","state":"https://pith.science/pith/LY2L2RNOPQOMSBENFLVPJGC2T4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LY2L2RNOPQOMSBENFLVPJGC2T4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:LY2L2RNOPQOMSBENFLVPJGC2T4","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":"33bfc4d1d00e861d521aa4dc2438d69ebc5ab1a427cab02d828d51bf3bdf64a0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-10-14T21:39:32Z","title_canon_sha256":"834385f61ee9e9698e335154c4528cfc18d0e42b6e2db8b08be6a61219bbe941"},"schema_version":"1.0","source":{"id":"0910.2716","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.2716","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"arxiv_version","alias_value":"0910.2716v1","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.2716","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"pith_short_12","alias_value":"LY2L2RNOPQOM","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"pith_short_16","alias_value":"LY2L2RNOPQOMSBEN","created_at":"2026-07-04T17:21:33Z"},{"alias_kind":"pith_short_8","alias_value":"LY2L2RNO","created_at":"2026-07-04T17:21:33Z"}],"graph_snapshots":[{"event_id":"sha256:06e20b6150b6505f50833cb975bdcd0036d3af87523186cf25e36ab833504184","target":"graph","created_at":"2026-07-04T17:21:33Z","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/0910.2716/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a simple feedback description of parametric instabilities which can be applied to a variety of optical systems. Parametric instabilities are of particular interest to the field of gravitational-wave interferometry where high mechanical quality factors and a large amount of stored optical power have the potential for instability. In our use of Advanced LIGO as an example application, we find that parametric instabilities, if left unaddressed, present a potential threat to the stability of high-power operation.","authors_text":"L. Barsotti, M. Evans, P. Fritschel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-10-14T21:39:32Z","title":"A General Approach to Optomechanical Parametric Instabilities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.2716","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:f6af6824e4be09d06a49d62b395c577ce313aaa46752e90859ee09014d729f86","target":"record","created_at":"2026-07-04T17:21:33Z","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":"33bfc4d1d00e861d521aa4dc2438d69ebc5ab1a427cab02d828d51bf3bdf64a0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2009-10-14T21:39:32Z","title_canon_sha256":"834385f61ee9e9698e335154c4528cfc18d0e42b6e2db8b08be6a61219bbe941"},"schema_version":"1.0","source":{"id":"0910.2716","kind":"arxiv","version":1}},"canonical_sha256":"5e34bd45ae7c1cc9048d2aeaf4985a9f1a5fea38094e6f7ae036ef9c6b893812","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e34bd45ae7c1cc9048d2aeaf4985a9f1a5fea38094e6f7ae036ef9c6b893812","first_computed_at":"2026-07-04T17:21:33.640744Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:21:33.640744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G/KG5LuNdgzz9u9O1dQfu1ijLGo3POCp4b2cW9ejGGW1OoOJ3VxE5WVwaHU6TFwXMeofK/TN705gms0IIyxCDw==","signature_status":"signed_v1","signed_at":"2026-07-04T17:21:33.641142Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.2716","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6af6824e4be09d06a49d62b395c577ce313aaa46752e90859ee09014d729f86","sha256:06e20b6150b6505f50833cb975bdcd0036d3af87523186cf25e36ab833504184"],"state_sha256":"9ca730075824cd9e45846290b14a03a90515c9dd668206bd8f5189106f418f72"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eLu6Xu6S0lte9NHL59XZDUCfakLvabpQa4rHH7/OsxwWx93sxF2EnnEITXTPeTry9MDWifm+e3OuqYJiESxdBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T14:18:01.391300Z","bundle_sha256":"08e66cca0ac92908e636e9d2c90b2d1ea32f4bcda79c0975fb65fd3b3ee18f8c"}}