{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:QRYNZPKC2IQUSZO3NCDO5DJDRQ","short_pith_number":"pith:QRYNZPKC","schema_version":"1.0","canonical_sha256":"8470dcbd42d2214965db6886ee8d238c38db61aeb6e558c71e0f8b19b343ea60","source":{"kind":"arxiv","id":"2403.06051","version":1},"attestation_state":"computed","paper":{"title":"Observation of non-contact Casimir friction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Kunhong Shen, Peng Ju, Tongcang Li, Yuanbin Jin, Zhujing Xu, Zubin Jacob","submitted_at":"2024-03-10T00:39:52Z","abstract_excerpt":"Quantum mechanics predicts the occurrence of random electromagnetic field fluctuations, or virtual photons, in vacuum. The exchange of virtual photons between two bodies in relative motion could lead to non-contact quantum vacuum friction or Casimir friction. Despite its theoretical significance, the non-contact Casimir frictional force has not been observed and its theoretical predictions have varied widely. In this work, we report the first measurement of the non-contact Casimir frictional force between two moving bodies. By employing two mechanical oscillators with resonant frequencies far "},"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":"2403.06051","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-03-10T00:39:52Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"0914302cd36327616b6a4391dab6fcf69f416018ab61fe815d8594ff002638e2","abstract_canon_sha256":"bab37091b6932200895c59b5b75e9eb0437b354269555b33592d3d0e4d1d5d40"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:54:17.479657Z","signature_b64":"JTzFy1Jkstn950Nzwo8VBanrTT50L6fNCvtR8HKMlOkW6oVFJbbGHJL6Y7Fp/MMwJcjhlxFuwqef7/oWSnthDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8470dcbd42d2214965db6886ee8d238c38db61aeb6e558c71e0f8b19b343ea60","last_reissued_at":"2026-07-05T07:54:17.479107Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:54:17.479107Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of non-contact Casimir friction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Kunhong Shen, Peng Ju, Tongcang Li, Yuanbin Jin, Zhujing Xu, Zubin Jacob","submitted_at":"2024-03-10T00:39:52Z","abstract_excerpt":"Quantum mechanics predicts the occurrence of random electromagnetic field fluctuations, or virtual photons, in vacuum. The exchange of virtual photons between two bodies in relative motion could lead to non-contact quantum vacuum friction or Casimir friction. Despite its theoretical significance, the non-contact Casimir frictional force has not been observed and its theoretical predictions have varied widely. In this work, we report the first measurement of the non-contact Casimir frictional force between two moving bodies. By employing two mechanical oscillators with resonant frequencies far "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.06051","kind":"arxiv","version":1},"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/2403.06051/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":"2403.06051","created_at":"2026-07-05T07:54:17.479159+00:00"},{"alias_kind":"arxiv_version","alias_value":"2403.06051v1","created_at":"2026-07-05T07:54:17.479159+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.06051","created_at":"2026-07-05T07:54:17.479159+00:00"},{"alias_kind":"pith_short_12","alias_value":"QRYNZPKC2IQU","created_at":"2026-07-05T07:54:17.479159+00:00"},{"alias_kind":"pith_short_16","alias_value":"QRYNZPKC2IQUSZO3","created_at":"2026-07-05T07:54:17.479159+00:00"},{"alias_kind":"pith_short_8","alias_value":"QRYNZPKC","created_at":"2026-07-05T07:54:17.479159+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2601.13265","citing_title":"Microscopic Quantum Friction","ref_index":6,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/QRYNZPKC2IQUSZO3NCDO5DJDRQ","json":"https://pith.science/pith/QRYNZPKC2IQUSZO3NCDO5DJDRQ.json","graph_json":"https://pith.science/api/pith-number/QRYNZPKC2IQUSZO3NCDO5DJDRQ/graph.json","events_json":"https://pith.science/api/pith-number/QRYNZPKC2IQUSZO3NCDO5DJDRQ/events.json","paper":"https://pith.science/paper/QRYNZPKC"},"agent_actions":{"view_html":"https://pith.science/pith/QRYNZPKC2IQUSZO3NCDO5DJDRQ","download_json":"https://pith.science/pith/QRYNZPKC2IQUSZO3NCDO5DJDRQ.json","view_paper":"https://pith.science/paper/QRYNZPKC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2403.06051&json=true","fetch_graph":"https://pith.science/api/pith-number/QRYNZPKC2IQUSZO3NCDO5DJDRQ/graph.json","fetch_events":"https://pith.science/api/pith-number/QRYNZPKC2IQUSZO3NCDO5DJDRQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QRYNZPKC2IQUSZO3NCDO5DJDRQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QRYNZPKC2IQUSZO3NCDO5DJDRQ/action/storage_attestation","attest_author":"https://pith.science/pith/QRYNZPKC2IQUSZO3NCDO5DJDRQ/action/author_attestation","sign_citation":"https://pith.science/pith/QRYNZPKC2IQUSZO3NCDO5DJDRQ/action/citation_signature","submit_replication":"https://pith.science/pith/QRYNZPKC2IQUSZO3NCDO5DJDRQ/action/replication_record"}},"created_at":"2026-07-05T07:54:17.479159+00:00","updated_at":"2026-07-05T07:54:17.479159+00:00"}