{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:R534YSH2U45GSODAA4J7X5ZHL5","short_pith_number":"pith:R534YSH2","canonical_record":{"source":{"id":"cond-mat/9906035","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat","submitted_at":"1999-06-03T02:46:18Z","cross_cats_sorted":[],"title_canon_sha256":"b342ff84966ed6bec9047bacf4414fd5bdc33039f3ea051ad4e6f9749f27f302","abstract_canon_sha256":"7e0c848d488e618ac2a60db6e4ee94c7ee0519bcfcd0e3c11046fd11125ca680"},"schema_version":"1.0"},"canonical_sha256":"8f77cc48faa73a6938600713fbf7275f62000fe567b82f6138984d283c120792","source":{"kind":"arxiv","id":"cond-mat/9906035","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9906035","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9906035v2","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9906035","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"pith_short_12","alias_value":"R534YSH2U45G","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"R534YSH2U45GSODA","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"R534YSH2","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:R534YSH2U45GSODAA4J7X5ZHL5","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/9906035","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat","submitted_at":"1999-06-03T02:46:18Z","cross_cats_sorted":[],"title_canon_sha256":"b342ff84966ed6bec9047bacf4414fd5bdc33039f3ea051ad4e6f9749f27f302","abstract_canon_sha256":"7e0c848d488e618ac2a60db6e4ee94c7ee0519bcfcd0e3c11046fd11125ca680"},"schema_version":"1.0"},"canonical_sha256":"8f77cc48faa73a6938600713fbf7275f62000fe567b82f6138984d283c120792","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:19.810541Z","signature_b64":"Yk4YE2VdB/9U2TLB/Q/ZGWSlNBKbATNVyU3fNNA3beux4w+xuGHZSoE5eX4dkyEojlBxTCpkf+5bCZVMBV6HDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8f77cc48faa73a6938600713fbf7275f62000fe567b82f6138984d283c120792","last_reissued_at":"2026-05-18T01:09:19.809919Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:19.809919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/9906035","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:09:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8MUyKzQGsOqCYGl3aJuLrYhCh7dVzBzAxj02nyQm/cgCH2zCyMzronzP+Ow3ITwpb0Q0/Vnv8fJ/pXaVim1sCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:17:14.844485Z"},"content_sha256":"818231bc90c58e1dd864f02f6a8819f6727fd97e9c1f194eae3d7f25316567c0","schema_version":"1.0","event_id":"sha256:818231bc90c58e1dd864f02f6a8819f6727fd97e9c1f194eae3d7f25316567c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:R534YSH2U45GSODAA4J7X5ZHL5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Excitation of phonons in a Bose-Einstein condensate by light scattering","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat","authors_text":"A. G\\\"orlitz, A.P. Chikkatur, D.E. Pritchard, D.M. Stamper-Kurn, S. Gupta, S. Inouye, W. Ketterle","submitted_at":"1999-06-03T02:46:18Z","abstract_excerpt":"Stimulated small-angle light scattering was used to measure the structure factor of a Bose-Einstein condensate in the phonon regime. The excitation strength for phonons was found to be significantly reduced from that of free particles, revealing the presence of correlated pair excitations and quantum depletion in the condensate. The Bragg resonance line strength and line shift agreed with predictions of a local density approximation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9906035","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:09:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4K0KD3W/tvrPBzXfiQ3SD0GPEfZDWgG6fdeG7bW5jkHFjd6XD9QZptnL/NODHG2sKqBaEkPL9MMO/Dh0XPnMCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:17:14.844844Z"},"content_sha256":"844361eb4b450432efe7abea637a178f79fd8543511ffc02833f72a5c38da250","schema_version":"1.0","event_id":"sha256:844361eb4b450432efe7abea637a178f79fd8543511ffc02833f72a5c38da250"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R534YSH2U45GSODAA4J7X5ZHL5/bundle.json","state_url":"https://pith.science/pith/R534YSH2U45GSODAA4J7X5ZHL5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R534YSH2U45GSODAA4J7X5ZHL5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T23:17:14Z","links":{"resolver":"https://pith.science/pith/R534YSH2U45GSODAA4J7X5ZHL5","bundle":"https://pith.science/pith/R534YSH2U45GSODAA4J7X5ZHL5/bundle.json","state":"https://pith.science/pith/R534YSH2U45GSODAA4J7X5ZHL5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R534YSH2U45GSODAA4J7X5ZHL5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:R534YSH2U45GSODAA4J7X5ZHL5","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"7e0c848d488e618ac2a60db6e4ee94c7ee0519bcfcd0e3c11046fd11125ca680","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat","submitted_at":"1999-06-03T02:46:18Z","title_canon_sha256":"b342ff84966ed6bec9047bacf4414fd5bdc33039f3ea051ad4e6f9749f27f302"},"schema_version":"1.0","source":{"id":"cond-mat/9906035","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9906035","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9906035v2","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9906035","created_at":"2026-05-18T01:09:19Z"},{"alias_kind":"pith_short_12","alias_value":"R534YSH2U45G","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"R534YSH2U45GSODA","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"R534YSH2","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:844361eb4b450432efe7abea637a178f79fd8543511ffc02833f72a5c38da250","target":"graph","created_at":"2026-05-18T01:09:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Stimulated small-angle light scattering was used to measure the structure factor of a Bose-Einstein condensate in the phonon regime. The excitation strength for phonons was found to be significantly reduced from that of free particles, revealing the presence of correlated pair excitations and quantum depletion in the condensate. The Bragg resonance line strength and line shift agreed with predictions of a local density approximation.","authors_text":"A. G\\\"orlitz, A.P. Chikkatur, D.E. Pritchard, D.M. Stamper-Kurn, S. Gupta, S. Inouye, W. Ketterle","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat","submitted_at":"1999-06-03T02:46:18Z","title":"Excitation of phonons in a Bose-Einstein condensate by light scattering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9906035","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:818231bc90c58e1dd864f02f6a8819f6727fd97e9c1f194eae3d7f25316567c0","target":"record","created_at":"2026-05-18T01:09:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"7e0c848d488e618ac2a60db6e4ee94c7ee0519bcfcd0e3c11046fd11125ca680","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat","submitted_at":"1999-06-03T02:46:18Z","title_canon_sha256":"b342ff84966ed6bec9047bacf4414fd5bdc33039f3ea051ad4e6f9749f27f302"},"schema_version":"1.0","source":{"id":"cond-mat/9906035","kind":"arxiv","version":2}},"canonical_sha256":"8f77cc48faa73a6938600713fbf7275f62000fe567b82f6138984d283c120792","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8f77cc48faa73a6938600713fbf7275f62000fe567b82f6138984d283c120792","first_computed_at":"2026-05-18T01:09:19.809919Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:19.809919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yk4YE2VdB/9U2TLB/Q/ZGWSlNBKbATNVyU3fNNA3beux4w+xuGHZSoE5eX4dkyEojlBxTCpkf+5bCZVMBV6HDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:19.810541Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/9906035","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:818231bc90c58e1dd864f02f6a8819f6727fd97e9c1f194eae3d7f25316567c0","sha256:844361eb4b450432efe7abea637a178f79fd8543511ffc02833f72a5c38da250"],"state_sha256":"51166fb9d6529803fa285a1c26faabcc348d140f0910c6d813ed462975fa1ee8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jPlzdTRaSTcthUnQuB83p7qux7yd3EhWyo/HwZPSBFjnJ36FBDczthJWQWRg4qXE3j7/fDg0gwDpMO7Lqm3aAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T23:17:14.847155Z","bundle_sha256":"d929cfe66f27dd2427946530339357b42b5a0e72cf3e0fd83cf754019a25f256"}}