{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:FD4PRLLGF3DZ64AGOYQ3CR4XYG","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":"493c63dc3723a429e0de769f92e93db1dae80c298ddf9848965cf72868aebaad","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-05-16T16:16:44Z","title_canon_sha256":"6ec3038a7c5155fac974a6db78f799c41092031c4663d85df271fc159d41b730"},"schema_version":"1.0","source":{"id":"2505.11407","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.11407","created_at":"2026-07-05T11:04:15Z"},{"alias_kind":"arxiv_version","alias_value":"2505.11407v1","created_at":"2026-07-05T11:04:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.11407","created_at":"2026-07-05T11:04:15Z"},{"alias_kind":"pith_short_12","alias_value":"FD4PRLLGF3DZ","created_at":"2026-07-05T11:04:15Z"},{"alias_kind":"pith_short_16","alias_value":"FD4PRLLGF3DZ64AG","created_at":"2026-07-05T11:04:15Z"},{"alias_kind":"pith_short_8","alias_value":"FD4PRLLG","created_at":"2026-07-05T11:04:15Z"}],"graph_snapshots":[{"event_id":"sha256:f6dd23b2b51d25c8c5a28cc92623827b972ec32173b129fe1c3f7df278bfeed5","target":"graph","created_at":"2026-07-05T11:04:15Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2505.11407/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Gravitational radiation from known astrophysical sources is conventionally treated classically. This treatment corresponds, implicitly, to the hypothesis that a particular class of quantum-mechanical states -- the so-called coherent states -- adequately describe the gravitational radiation field. We propose practicable, quantitative tests of that hypothesis using resonant bar detectors monitored in coincidence with LIGO-style interferometers. Our tests readily distinguish fields that contain significant thermal components or squeezing. We identify concrete circumstances in which the classical ","authors_text":"Frank Wilczek, Sreenath K. Manikandan","cross_cats":["quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-05-16T16:16:44Z","title":"Probing Quantum Structure in Gravitational Radiation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.11407","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:a0396b8d126937af932d94551d2aa8d581908415985e0006ccf6f6a3089890cb","target":"record","created_at":"2026-07-05T11:04:15Z","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":"493c63dc3723a429e0de769f92e93db1dae80c298ddf9848965cf72868aebaad","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2025-05-16T16:16:44Z","title_canon_sha256":"6ec3038a7c5155fac974a6db78f799c41092031c4663d85df271fc159d41b730"},"schema_version":"1.0","source":{"id":"2505.11407","kind":"arxiv","version":1}},"canonical_sha256":"28f8f8ad662ec79f70067621b14797c18f7852a4ed64d8bc2e52de6a243f9ee9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"28f8f8ad662ec79f70067621b14797c18f7852a4ed64d8bc2e52de6a243f9ee9","first_computed_at":"2026-07-05T11:04:15.570712Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:04:15.570712Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yB3AXNuAOTyCokyIeK6K0gRehpo+pvJsltjtdA7YSQt8lHBU95x2qlguRu59oP7BSvhRewN789ce7cYeF8wlBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:04:15.571262Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.11407","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0396b8d126937af932d94551d2aa8d581908415985e0006ccf6f6a3089890cb","sha256:f6dd23b2b51d25c8c5a28cc92623827b972ec32173b129fe1c3f7df278bfeed5"],"state_sha256":"c5a404625b129ff25598e02a278f4d6c30537eae269aeff5715f6b6200409e26"}