{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:OTLLJAMZLYQ7UVRYU6NAEA5674","short_pith_number":"pith:OTLLJAMZ","schema_version":"1.0","canonical_sha256":"74d6b481995e21fa5638a79a0203beff3f8cb2407e6b3a7d240dc4b3086d8a5b","source":{"kind":"arxiv","id":"2108.02382","version":2},"attestation_state":"computed","paper":{"title":"Second-order peculiar velocity field as a novel probe of scalar-tensor theories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Daisuke Yamauchi, Naonori S. Sugiyama","submitted_at":"2021-08-05T05:29:50Z","abstract_excerpt":"We investigate the galaxy bispectrum induced by the nonlinear gravitational evolution as a possible probe to constrain degenerate higher-order scalar tensor (DHOST) theories. We find that the signal obtained from the leading kernel of second-order density fluctuations is partially hidden by the uncertainty in the nonlinear galaxy bias, and that the kernel of second-order velocity fields instead provides unbiased information on the modification of gravity theory. Based on this fact, we propose new phenomenological time-dependent functions, written as a combination of the coefficients of the sec"},"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":"2108.02382","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-08-05T05:29:50Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6b10cb79c9d5015155419fbdc05db7afa81e74362fe74e8bf7460aaba347b43d","abstract_canon_sha256":"cb2f9c55e832a4c955690a03ab6baf017cb700baab837c460ba4e7d5b1a9d25d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:07:23.789724Z","signature_b64":"2cTHtSX3Jw1vuRrFk3guSXsWoIeR4nD3pCqIA6Vid5Rqh5jPwol8gkD8mcizW08ddPAO9RTAuP1M0A4CDjf/CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"74d6b481995e21fa5638a79a0203beff3f8cb2407e6b3a7d240dc4b3086d8a5b","last_reissued_at":"2026-07-05T04:07:23.789228Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:07:23.789228Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Second-order peculiar velocity field as a novel probe of scalar-tensor theories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Daisuke Yamauchi, Naonori S. Sugiyama","submitted_at":"2021-08-05T05:29:50Z","abstract_excerpt":"We investigate the galaxy bispectrum induced by the nonlinear gravitational evolution as a possible probe to constrain degenerate higher-order scalar tensor (DHOST) theories. We find that the signal obtained from the leading kernel of second-order density fluctuations is partially hidden by the uncertainty in the nonlinear galaxy bias, and that the kernel of second-order velocity fields instead provides unbiased information on the modification of gravity theory. Based on this fact, we propose new phenomenological time-dependent functions, written as a combination of the coefficients of the sec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.02382","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/2108.02382/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":"2108.02382","created_at":"2026-07-05T04:07:23.789286+00:00"},{"alias_kind":"arxiv_version","alias_value":"2108.02382v2","created_at":"2026-07-05T04:07:23.789286+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.02382","created_at":"2026-07-05T04:07:23.789286+00:00"},{"alias_kind":"pith_short_12","alias_value":"OTLLJAMZLYQ7","created_at":"2026-07-05T04:07:23.789286+00:00"},{"alias_kind":"pith_short_16","alias_value":"OTLLJAMZLYQ7UVRY","created_at":"2026-07-05T04:07:23.789286+00:00"},{"alias_kind":"pith_short_8","alias_value":"OTLLJAMZ","created_at":"2026-07-05T04:07:23.789286+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/OTLLJAMZLYQ7UVRYU6NAEA5674","json":"https://pith.science/pith/OTLLJAMZLYQ7UVRYU6NAEA5674.json","graph_json":"https://pith.science/api/pith-number/OTLLJAMZLYQ7UVRYU6NAEA5674/graph.json","events_json":"https://pith.science/api/pith-number/OTLLJAMZLYQ7UVRYU6NAEA5674/events.json","paper":"https://pith.science/paper/OTLLJAMZ"},"agent_actions":{"view_html":"https://pith.science/pith/OTLLJAMZLYQ7UVRYU6NAEA5674","download_json":"https://pith.science/pith/OTLLJAMZLYQ7UVRYU6NAEA5674.json","view_paper":"https://pith.science/paper/OTLLJAMZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2108.02382&json=true","fetch_graph":"https://pith.science/api/pith-number/OTLLJAMZLYQ7UVRYU6NAEA5674/graph.json","fetch_events":"https://pith.science/api/pith-number/OTLLJAMZLYQ7UVRYU6NAEA5674/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OTLLJAMZLYQ7UVRYU6NAEA5674/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OTLLJAMZLYQ7UVRYU6NAEA5674/action/storage_attestation","attest_author":"https://pith.science/pith/OTLLJAMZLYQ7UVRYU6NAEA5674/action/author_attestation","sign_citation":"https://pith.science/pith/OTLLJAMZLYQ7UVRYU6NAEA5674/action/citation_signature","submit_replication":"https://pith.science/pith/OTLLJAMZLYQ7UVRYU6NAEA5674/action/replication_record"}},"created_at":"2026-07-05T04:07:23.789286+00:00","updated_at":"2026-07-05T04:07:23.789286+00:00"}