{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:NDRUHG3QI5QHUCW34MLT5OAIUF","short_pith_number":"pith:NDRUHG3Q","schema_version":"1.0","canonical_sha256":"68e3439b7047607a0adbe3173eb808a14632c64cb16e4bf4178aa4ec2a3e48f7","source":{"kind":"arxiv","id":"2012.03498","version":2},"attestation_state":"computed","paper":{"title":"Cross-correlations as a Diagnostic Tool for Primordial Gravitational Waves","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Ameek Malhotra, Ema Dimastrogiovanni, Maresuke Shiraishi, Matteo Fasiello","submitted_at":"2020-12-07T07:44:41Z","abstract_excerpt":"We explore and corroborate, by working out explicit examples, the effectiveness of cross-correlating stochastic gravitational wave background anisotropies with CMB temperature fluctuations as a way to establish the primordial nature of a given gravitational wave signal. We consider the case of gravitational wave anisotropies induced by scalar-tensor-tensor primordial non-Gaussianity. Our analysis spans anisotropies exhibiting different angular behaviours, including a quadrupolar dependence. We calculate the expected uncertainty on the non-linearity parameter $F_{\\rm NL}$ obtained as a result o"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2012.03498","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-12-07T07:44:41Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"4b2bcdab52a1914faba11881884cafbfa3e191d7d2336197d19e23209434c63e","abstract_canon_sha256":"fe918481cc5ebe01cbed5758fa033e013eddede6ad2b17ac8327dd3d2890c1a1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:26:53.019962Z","signature_b64":"q8EZDT+RCgCotpW8VMXgJ/ZuOZV4psQqQRcdmTapstRfQabVcmlr7pXZMhqbv2X1FrdU4sMU4FFrzlHcJ19nCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68e3439b7047607a0adbe3173eb808a14632c64cb16e4bf4178aa4ec2a3e48f7","last_reissued_at":"2026-07-05T02:26:53.019553Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:26:53.019553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cross-correlations as a Diagnostic Tool for Primordial Gravitational Waves","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Ameek Malhotra, Ema Dimastrogiovanni, Maresuke Shiraishi, Matteo Fasiello","submitted_at":"2020-12-07T07:44:41Z","abstract_excerpt":"We explore and corroborate, by working out explicit examples, the effectiveness of cross-correlating stochastic gravitational wave background anisotropies with CMB temperature fluctuations as a way to establish the primordial nature of a given gravitational wave signal. We consider the case of gravitational wave anisotropies induced by scalar-tensor-tensor primordial non-Gaussianity. Our analysis spans anisotropies exhibiting different angular behaviours, including a quadrupolar dependence. We calculate the expected uncertainty on the non-linearity parameter $F_{\\rm NL}$ obtained as a result o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.03498","kind":"arxiv","version":2},"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/2012.03498/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2012.03498","created_at":"2026-07-05T02:26:53.019602+00:00"},{"alias_kind":"arxiv_version","alias_value":"2012.03498v2","created_at":"2026-07-05T02:26:53.019602+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.03498","created_at":"2026-07-05T02:26:53.019602+00:00"},{"alias_kind":"pith_short_12","alias_value":"NDRUHG3QI5QH","created_at":"2026-07-05T02:26:53.019602+00:00"},{"alias_kind":"pith_short_16","alias_value":"NDRUHG3QI5QHUCW3","created_at":"2026-07-05T02:26:53.019602+00:00"},{"alias_kind":"pith_short_8","alias_value":"NDRUHG3Q","created_at":"2026-07-05T02:26:53.019602+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2505.16820","citing_title":"Isotropy, anisotropies and non-Gaussianity in the scalar-induced gravitational-wave background: diagrammatic approach for primordial non-Gaussianity up to arbitrary order","ref_index":173,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF","json":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF.json","graph_json":"https://pith.science/api/pith-number/NDRUHG3QI5QHUCW34MLT5OAIUF/graph.json","events_json":"https://pith.science/api/pith-number/NDRUHG3QI5QHUCW34MLT5OAIUF/events.json","paper":"https://pith.science/paper/NDRUHG3Q"},"agent_actions":{"view_html":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF","download_json":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF.json","view_paper":"https://pith.science/paper/NDRUHG3Q","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2012.03498&json=true","fetch_graph":"https://pith.science/api/pith-number/NDRUHG3QI5QHUCW34MLT5OAIUF/graph.json","fetch_events":"https://pith.science/api/pith-number/NDRUHG3QI5QHUCW34MLT5OAIUF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/action/storage_attestation","attest_author":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/action/author_attestation","sign_citation":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/action/citation_signature","submit_replication":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/action/replication_record"}},"created_at":"2026-07-05T02:26:53.019602+00:00","updated_at":"2026-07-05T02:26:53.019602+00:00"}