{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:HVZIPNLQVMCBWNCX5PBS5KGBUB","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":"8588cce0815b61ad4d943e203e40ce397fd86a5d35fefa52c355feb33cbb0f67","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-11-18T18:40:12Z","title_canon_sha256":"54a481a02b38aa54ccc5cad500f6ee54a691ce392bfffb998596e9fde50407ff"},"schema_version":"1.0","source":{"id":"2011.09461","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.09461","created_at":"2026-07-05T02:38:52Z"},{"alias_kind":"arxiv_version","alias_value":"2011.09461v2","created_at":"2026-07-05T02:38:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.09461","created_at":"2026-07-05T02:38:52Z"},{"alias_kind":"pith_short_12","alias_value":"HVZIPNLQVMCB","created_at":"2026-07-05T02:38:52Z"},{"alias_kind":"pith_short_16","alias_value":"HVZIPNLQVMCBWNCX","created_at":"2026-07-05T02:38:52Z"},{"alias_kind":"pith_short_8","alias_value":"HVZIPNLQ","created_at":"2026-07-05T02:38:52Z"}],"graph_snapshots":[{"event_id":"sha256:2df380e2b732b92360b878e8158ec4d1176913814c71f23365d380e9094d77f3","target":"graph","created_at":"2026-07-05T02:38:52Z","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/2011.09461/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the cosmic variance limit on constraining primordial non-Gaussianity for a variety of theory-motivated shapes. We consider general arguments for 2D and 3D surveys, with a particular emphasis on the CMB. A scale-invariant $N$-point correlator can be measured with a signal-to-noise that naively scales with the square root of the number of observed modes. This intuition generally fails for two reasons. First, the signal-to-noise scaling is reduced due to the blurring of the last scattering surface at short distances. This blurring is caused by the combination of projection and damping, b","authors_text":"Alba Kalaja, Guilherme L. Pimentel, P. Daniel Meerburg, William R. Coulton","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-11-18T18:40:12Z","title":"Fundamental limits on constraining primordial non-Gaussianity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.09461","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:eb019a238a2aa2732746efb4c0ccb91f4763f74fd71c000f8694b6e4a6f85d0f","target":"record","created_at":"2026-07-05T02:38:52Z","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":"8588cce0815b61ad4d943e203e40ce397fd86a5d35fefa52c355feb33cbb0f67","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-11-18T18:40:12Z","title_canon_sha256":"54a481a02b38aa54ccc5cad500f6ee54a691ce392bfffb998596e9fde50407ff"},"schema_version":"1.0","source":{"id":"2011.09461","kind":"arxiv","version":2}},"canonical_sha256":"3d7287b570ab041b3457ebc32ea8c1a0457c9ec4c1bd1c10c8e851f5bdd73405","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d7287b570ab041b3457ebc32ea8c1a0457c9ec4c1bd1c10c8e851f5bdd73405","first_computed_at":"2026-07-05T02:38:52.171561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:38:52.171561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8w7tiUkG3Q6OjL4pZjbxrnKSu+O6x+Rk4xdVBdBTKGcQ9DH7WPUZjrVb6HIg6x8dMHohR3HOzIsq7qvdsgExAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:38:52.171954Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.09461","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb019a238a2aa2732746efb4c0ccb91f4763f74fd71c000f8694b6e4a6f85d0f","sha256:2df380e2b732b92360b878e8158ec4d1176913814c71f23365d380e9094d77f3"],"state_sha256":"20cb30dce4331b8fe5ccf0c113fd38d10f396be56f75a030655f94c6c2e3627e"}