{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:OMMYBPFREHI3ORRGFYICARC4TB","short_pith_number":"pith:OMMYBPFR","schema_version":"1.0","canonical_sha256":"731980bcb121d1b746262e1020445c98680256cbc46e2b936402e8a5d7c63fbd","source":{"kind":"arxiv","id":"2010.06387","version":2},"attestation_state":"computed","paper":{"title":"Particle scattering in a sonic analogue of special relativity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"gr-qc","authors_text":"Giacomo Pantaleoni, Nicolas C. Menicucci, Scott L. Todd, Valentina Baccetti","submitted_at":"2020-10-13T13:39:14Z","abstract_excerpt":"We investigate a simple toy model of particle scattering in the flat spacetime limit of an analogue-gravity model. The analogue-gravity medium is treated as a scalar field of phonons that obeys the Klein-Gordon equation and thus admits a Lorentz symmetry with respect to $c_\\mathrm{s}$, the speed of sound in the medium. The particle from which the phonons are scattered is external to the system and does not obey the sonic Lorentz symmetry that the phonon field obeys. In-universe observers who use the exchange of sound to operationally measure distance and duration find that the external particl"},"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":"2010.06387","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-10-13T13:39:14Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"35b348189254849a8196d8d664caba0cd4ce43541dd587a97e0491e217b10c34","abstract_canon_sha256":"c71cc028ae01dd5fd8f93f470531f9a1c240773ac1448b93b7ba85c713343ecb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:56:00.309017Z","signature_b64":"CmuDdZtCXUnlSKwZNeFW7/VEv8EciQfAtXY//TzWa5/ECsoRFdtKyxJWo0XohIsPePPnVot6Y1y/MDUzZYW+Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"731980bcb121d1b746262e1020445c98680256cbc46e2b936402e8a5d7c63fbd","last_reissued_at":"2026-07-05T03:56:00.308627Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:56:00.308627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Particle scattering in a sonic analogue of special relativity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"gr-qc","authors_text":"Giacomo Pantaleoni, Nicolas C. Menicucci, Scott L. Todd, Valentina Baccetti","submitted_at":"2020-10-13T13:39:14Z","abstract_excerpt":"We investigate a simple toy model of particle scattering in the flat spacetime limit of an analogue-gravity model. The analogue-gravity medium is treated as a scalar field of phonons that obeys the Klein-Gordon equation and thus admits a Lorentz symmetry with respect to $c_\\mathrm{s}$, the speed of sound in the medium. The particle from which the phonons are scattered is external to the system and does not obey the sonic Lorentz symmetry that the phonon field obeys. In-universe observers who use the exchange of sound to operationally measure distance and duration find that the external particl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.06387","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/2010.06387/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":"2010.06387","created_at":"2026-07-05T03:56:00.308684+00:00"},{"alias_kind":"arxiv_version","alias_value":"2010.06387v2","created_at":"2026-07-05T03:56:00.308684+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.06387","created_at":"2026-07-05T03:56:00.308684+00:00"},{"alias_kind":"pith_short_12","alias_value":"OMMYBPFREHI3","created_at":"2026-07-05T03:56:00.308684+00:00"},{"alias_kind":"pith_short_16","alias_value":"OMMYBPFREHI3ORRG","created_at":"2026-07-05T03:56:00.308684+00:00"},{"alias_kind":"pith_short_8","alias_value":"OMMYBPFR","created_at":"2026-07-05T03:56:00.308684+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/OMMYBPFREHI3ORRGFYICARC4TB","json":"https://pith.science/pith/OMMYBPFREHI3ORRGFYICARC4TB.json","graph_json":"https://pith.science/api/pith-number/OMMYBPFREHI3ORRGFYICARC4TB/graph.json","events_json":"https://pith.science/api/pith-number/OMMYBPFREHI3ORRGFYICARC4TB/events.json","paper":"https://pith.science/paper/OMMYBPFR"},"agent_actions":{"view_html":"https://pith.science/pith/OMMYBPFREHI3ORRGFYICARC4TB","download_json":"https://pith.science/pith/OMMYBPFREHI3ORRGFYICARC4TB.json","view_paper":"https://pith.science/paper/OMMYBPFR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2010.06387&json=true","fetch_graph":"https://pith.science/api/pith-number/OMMYBPFREHI3ORRGFYICARC4TB/graph.json","fetch_events":"https://pith.science/api/pith-number/OMMYBPFREHI3ORRGFYICARC4TB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OMMYBPFREHI3ORRGFYICARC4TB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OMMYBPFREHI3ORRGFYICARC4TB/action/storage_attestation","attest_author":"https://pith.science/pith/OMMYBPFREHI3ORRGFYICARC4TB/action/author_attestation","sign_citation":"https://pith.science/pith/OMMYBPFREHI3ORRGFYICARC4TB/action/citation_signature","submit_replication":"https://pith.science/pith/OMMYBPFREHI3ORRGFYICARC4TB/action/replication_record"}},"created_at":"2026-07-05T03:56:00.308684+00:00","updated_at":"2026-07-05T03:56:00.308684+00:00"}