{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:Q56JILWQTDZRRONAPD64237JNC","short_pith_number":"pith:Q56JILWQ","canonical_record":{"source":{"id":"1611.05566","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-11-17T05:21:51Z","cross_cats_sorted":["cond-mat.stat-mech","cond-mat.str-el","cond-mat.supr-con"],"title_canon_sha256":"9c5d665d9cdad8e46ae54776a3f91afe0f41e1e44f6b41abdcd299cf7ddf638d","abstract_canon_sha256":"32d0a19728ceb534e40748aea747bb98c4126ca0e53ea4ed9684492e1c4b97a9"},"schema_version":"1.0"},"canonical_sha256":"877c942ed098f318b9a078fdcd6fe968a60c8a669ba83cbb7832016d71731f2d","source":{"kind":"arxiv","id":"1611.05566","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.05566","created_at":"2026-05-18T00:58:03Z"},{"alias_kind":"arxiv_version","alias_value":"1611.05566v1","created_at":"2026-05-18T00:58:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.05566","created_at":"2026-05-18T00:58:03Z"},{"alias_kind":"pith_short_12","alias_value":"Q56JILWQTDZR","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"Q56JILWQTDZRRONA","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"Q56JILWQ","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:Q56JILWQTDZRRONAPD64237JNC","target":"record","payload":{"canonical_record":{"source":{"id":"1611.05566","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-11-17T05:21:51Z","cross_cats_sorted":["cond-mat.stat-mech","cond-mat.str-el","cond-mat.supr-con"],"title_canon_sha256":"9c5d665d9cdad8e46ae54776a3f91afe0f41e1e44f6b41abdcd299cf7ddf638d","abstract_canon_sha256":"32d0a19728ceb534e40748aea747bb98c4126ca0e53ea4ed9684492e1c4b97a9"},"schema_version":"1.0"},"canonical_sha256":"877c942ed098f318b9a078fdcd6fe968a60c8a669ba83cbb7832016d71731f2d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:58:03.253032Z","signature_b64":"UJFLNkNthXkESIjAlWX1Zkyaqhl7TH0uzmjemtKCbbE44QxCPOVIZXcK8DoxbeseQVsC3tmThuECYCZDJKywCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"877c942ed098f318b9a078fdcd6fe968a60c8a669ba83cbb7832016d71731f2d","last_reissued_at":"2026-05-18T00:58:03.252485Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:58:03.252485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.05566","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:58:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o7uTsE5/EKsH1hBjF4QY7o+taimcdcNvyQQAHGTHbo7q/8dph8yf9AqBuFFHDUD82QaW/c4yHDQWxxnPaw38Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T14:54:18.906736Z"},"content_sha256":"9669c90d898308659ac3795d59700e059cf89b6c6e449afcfabd911a9a9ffa03","schema_version":"1.0","event_id":"sha256:9669c90d898308659ac3795d59700e059cf89b6c6e449afcfabd911a9a9ffa03"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:Q56JILWQTDZRRONAPD64237JNC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Are Quasiparticles and Phonons Identical in Bose--Einstein Condensates?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech","cond-mat.str-el","cond-mat.supr-con"],"primary_cat":"cond-mat.quant-gas","authors_text":"Kazumasa Tsutsui, Takafumi Kita, Yusuke Kato","submitted_at":"2016-11-17T05:21:51Z","abstract_excerpt":"We study an interacting spinless Bose-Einstein condensate to clarify theoretically whether the spectra of its quasiparticles (one-particle excitations) and collective modes (two-particle excitations) are identical, as concluded by Gavoret and Nozi\\`eres [Ann. Phys. 28, 349 (1964)]. We derive analytic expressions for their first and second moments so as to extend the Bijl-Feynman formula for the peak of the collective-mode spectrum to its width (inverse lifetime) and also to the one-particle channel. The obtained formulas indicate that the width of the collective-mode spectrum manifestly vanish"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.05566","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":""},"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":"2026-05-18T00:58:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e7CRYVlNR6zudqOetrbFa4D2GCTvgBgb69JZom9A8kpNLDThC6ZJ043iUqv1K7PjhTOyHZINfKiv5k3csfs6Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T14:54:18.907095Z"},"content_sha256":"e7c8b5a2ec503b3cff4055a910db7519b6e0ec76a522c5ce5ac89f2b554ac796","schema_version":"1.0","event_id":"sha256:e7c8b5a2ec503b3cff4055a910db7519b6e0ec76a522c5ce5ac89f2b554ac796"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q56JILWQTDZRRONAPD64237JNC/bundle.json","state_url":"https://pith.science/pith/Q56JILWQTDZRRONAPD64237JNC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q56JILWQTDZRRONAPD64237JNC/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":"2026-06-23T14:54:18Z","links":{"resolver":"https://pith.science/pith/Q56JILWQTDZRRONAPD64237JNC","bundle":"https://pith.science/pith/Q56JILWQTDZRRONAPD64237JNC/bundle.json","state":"https://pith.science/pith/Q56JILWQTDZRRONAPD64237JNC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q56JILWQTDZRRONAPD64237JNC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:Q56JILWQTDZRRONAPD64237JNC","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":"32d0a19728ceb534e40748aea747bb98c4126ca0e53ea4ed9684492e1c4b97a9","cross_cats_sorted":["cond-mat.stat-mech","cond-mat.str-el","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-11-17T05:21:51Z","title_canon_sha256":"9c5d665d9cdad8e46ae54776a3f91afe0f41e1e44f6b41abdcd299cf7ddf638d"},"schema_version":"1.0","source":{"id":"1611.05566","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.05566","created_at":"2026-05-18T00:58:03Z"},{"alias_kind":"arxiv_version","alias_value":"1611.05566v1","created_at":"2026-05-18T00:58:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.05566","created_at":"2026-05-18T00:58:03Z"},{"alias_kind":"pith_short_12","alias_value":"Q56JILWQTDZR","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"Q56JILWQTDZRRONA","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"Q56JILWQ","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:e7c8b5a2ec503b3cff4055a910db7519b6e0ec76a522c5ce5ac89f2b554ac796","target":"graph","created_at":"2026-05-18T00:58:03Z","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":"We study an interacting spinless Bose-Einstein condensate to clarify theoretically whether the spectra of its quasiparticles (one-particle excitations) and collective modes (two-particle excitations) are identical, as concluded by Gavoret and Nozi\\`eres [Ann. Phys. 28, 349 (1964)]. We derive analytic expressions for their first and second moments so as to extend the Bijl-Feynman formula for the peak of the collective-mode spectrum to its width (inverse lifetime) and also to the one-particle channel. The obtained formulas indicate that the width of the collective-mode spectrum manifestly vanish","authors_text":"Kazumasa Tsutsui, Takafumi Kita, Yusuke Kato","cross_cats":["cond-mat.stat-mech","cond-mat.str-el","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-11-17T05:21:51Z","title":"Are Quasiparticles and Phonons Identical in Bose--Einstein Condensates?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.05566","kind":"arxiv","version":1},"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":"sha256:9669c90d898308659ac3795d59700e059cf89b6c6e449afcfabd911a9a9ffa03","target":"record","created_at":"2026-05-18T00:58:03Z","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":"32d0a19728ceb534e40748aea747bb98c4126ca0e53ea4ed9684492e1c4b97a9","cross_cats_sorted":["cond-mat.stat-mech","cond-mat.str-el","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-11-17T05:21:51Z","title_canon_sha256":"9c5d665d9cdad8e46ae54776a3f91afe0f41e1e44f6b41abdcd299cf7ddf638d"},"schema_version":"1.0","source":{"id":"1611.05566","kind":"arxiv","version":1}},"canonical_sha256":"877c942ed098f318b9a078fdcd6fe968a60c8a669ba83cbb7832016d71731f2d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"877c942ed098f318b9a078fdcd6fe968a60c8a669ba83cbb7832016d71731f2d","first_computed_at":"2026-05-18T00:58:03.252485Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:58:03.252485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UJFLNkNthXkESIjAlWX1Zkyaqhl7TH0uzmjemtKCbbE44QxCPOVIZXcK8DoxbeseQVsC3tmThuECYCZDJKywCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:58:03.253032Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.05566","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9669c90d898308659ac3795d59700e059cf89b6c6e449afcfabd911a9a9ffa03","sha256:e7c8b5a2ec503b3cff4055a910db7519b6e0ec76a522c5ce5ac89f2b554ac796"],"state_sha256":"664e723e3972bdbf1c1530da798c3b1a9e26676ebc4cb04d121378511dc55f21"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K0oVYPHmKVCzcoAXRAPFQaC0l10XR9SBPPqofOi/Mk+UrnZg53zfx7F6RXwVu2mMbHHr1wIXVpo1bhYzGI3dCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T14:54:18.909130Z","bundle_sha256":"24a42499d8a0a4283c8ee77941d4753eaf2f0f3e488ed564f0054c65696f3b7b"}}