{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:5Q5JPL53UR3DSACQ7R44IGF2PS","short_pith_number":"pith:5Q5JPL53","schema_version":"1.0","canonical_sha256":"ec3a97afbba476390050fc79c418ba7ca41390e33aac21d4de5db2dd3b45feb5","source":{"kind":"arxiv","id":"1211.4237","version":2},"attestation_state":"computed","paper":{"title":"Propagation of hydrodynamic interactions between particles in a compressible fluid","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.flu-dyn"],"primary_cat":"cond-mat.soft","authors_text":"Rei Tatsumi, Ryoichi Yamamoto","submitted_at":"2012-11-18T17:19:27Z","abstract_excerpt":"Hydrodynamic interactions are transmitted by viscous diffusion and sound propagation: the temporal evolution of hydrodynamic interactions by both mechanisms is studied by direct numerical simulation in this paper. The hydrodynamic interactions for a system of two particles in a fluid are estimated by the velocity correlation of the particles. In an incompressible fluid, hydrodynamic interactions propagate instantaneously at the infinite speed of sound, followed by the temporal evolution of viscous diffusion. On the other hand, in a compressible fluid, sound propagates at a finite speed, which "},"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":"1211.4237","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-11-18T17:19:27Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"215a6b08bc1e958cb966745b2b2f32991217b0fa8b94f9adeb2fbbfe6eccbd4d","abstract_canon_sha256":"507ffe14125e51320552afdb6a8e93a728cdadc3a7cd814478c624f7ff874cbc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:03.226043Z","signature_b64":"Uq8tjHsNtUbE2/uz65oZDYpkinr6yvftKnKLIAFyCrsZRQpeObaxOe8cWG9l54nWPE6KTrVF7C4AuTyq/If2CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec3a97afbba476390050fc79c418ba7ca41390e33aac21d4de5db2dd3b45feb5","last_reissued_at":"2026-05-18T01:53:03.225235Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:03.225235Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Propagation of hydrodynamic interactions between particles in a compressible fluid","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.flu-dyn"],"primary_cat":"cond-mat.soft","authors_text":"Rei Tatsumi, Ryoichi Yamamoto","submitted_at":"2012-11-18T17:19:27Z","abstract_excerpt":"Hydrodynamic interactions are transmitted by viscous diffusion and sound propagation: the temporal evolution of hydrodynamic interactions by both mechanisms is studied by direct numerical simulation in this paper. The hydrodynamic interactions for a system of two particles in a fluid are estimated by the velocity correlation of the particles. In an incompressible fluid, hydrodynamic interactions propagate instantaneously at the infinite speed of sound, followed by the temporal evolution of viscous diffusion. On the other hand, in a compressible fluid, sound propagates at a finite speed, which "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.4237","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":""},"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":"1211.4237","created_at":"2026-05-18T01:53:03.225379+00:00"},{"alias_kind":"arxiv_version","alias_value":"1211.4237v2","created_at":"2026-05-18T01:53:03.225379+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.4237","created_at":"2026-05-18T01:53:03.225379+00:00"},{"alias_kind":"pith_short_12","alias_value":"5Q5JPL53UR3D","created_at":"2026-05-18T12:26:56.085431+00:00"},{"alias_kind":"pith_short_16","alias_value":"5Q5JPL53UR3DSACQ","created_at":"2026-05-18T12:26:56.085431+00:00"},{"alias_kind":"pith_short_8","alias_value":"5Q5JPL53","created_at":"2026-05-18T12:26:56.085431+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/5Q5JPL53UR3DSACQ7R44IGF2PS","json":"https://pith.science/pith/5Q5JPL53UR3DSACQ7R44IGF2PS.json","graph_json":"https://pith.science/api/pith-number/5Q5JPL53UR3DSACQ7R44IGF2PS/graph.json","events_json":"https://pith.science/api/pith-number/5Q5JPL53UR3DSACQ7R44IGF2PS/events.json","paper":"https://pith.science/paper/5Q5JPL53"},"agent_actions":{"view_html":"https://pith.science/pith/5Q5JPL53UR3DSACQ7R44IGF2PS","download_json":"https://pith.science/pith/5Q5JPL53UR3DSACQ7R44IGF2PS.json","view_paper":"https://pith.science/paper/5Q5JPL53","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1211.4237&json=true","fetch_graph":"https://pith.science/api/pith-number/5Q5JPL53UR3DSACQ7R44IGF2PS/graph.json","fetch_events":"https://pith.science/api/pith-number/5Q5JPL53UR3DSACQ7R44IGF2PS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5Q5JPL53UR3DSACQ7R44IGF2PS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5Q5JPL53UR3DSACQ7R44IGF2PS/action/storage_attestation","attest_author":"https://pith.science/pith/5Q5JPL53UR3DSACQ7R44IGF2PS/action/author_attestation","sign_citation":"https://pith.science/pith/5Q5JPL53UR3DSACQ7R44IGF2PS/action/citation_signature","submit_replication":"https://pith.science/pith/5Q5JPL53UR3DSACQ7R44IGF2PS/action/replication_record"}},"created_at":"2026-05-18T01:53:03.225379+00:00","updated_at":"2026-05-18T01:53:03.225379+00:00"}