{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:U3XNOHP3MU4WCHRF6F4FEI5QHX","short_pith_number":"pith:U3XNOHP3","canonical_record":{"source":{"id":"1802.03780","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-02-11T17:57:28Z","cross_cats_sorted":[],"title_canon_sha256":"3d573346f4cb7fa771eb1b0121845014ad602f1cf850669764346f68c22c1263","abstract_canon_sha256":"4e32e7bfd4ba1a49613319e9e147b95c5e0b11863b2655fa03e8936a99049ecb"},"schema_version":"1.0"},"canonical_sha256":"a6eed71dfb6539611e25f1785223b03de4fc4723a0d6a68d75d9507833a12624","source":{"kind":"arxiv","id":"1802.03780","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.03780","created_at":"2026-05-18T00:10:28Z"},{"alias_kind":"arxiv_version","alias_value":"1802.03780v1","created_at":"2026-05-18T00:10:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.03780","created_at":"2026-05-18T00:10:28Z"},{"alias_kind":"pith_short_12","alias_value":"U3XNOHP3MU4W","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"U3XNOHP3MU4WCHRF","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"U3XNOHP3","created_at":"2026-05-18T12:32:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:U3XNOHP3MU4WCHRF6F4FEI5QHX","target":"record","payload":{"canonical_record":{"source":{"id":"1802.03780","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-02-11T17:57:28Z","cross_cats_sorted":[],"title_canon_sha256":"3d573346f4cb7fa771eb1b0121845014ad602f1cf850669764346f68c22c1263","abstract_canon_sha256":"4e32e7bfd4ba1a49613319e9e147b95c5e0b11863b2655fa03e8936a99049ecb"},"schema_version":"1.0"},"canonical_sha256":"a6eed71dfb6539611e25f1785223b03de4fc4723a0d6a68d75d9507833a12624","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:28.146271Z","signature_b64":"tPny8L4htjSE8IY1XpWIW9Xwy4Zb7+6SqDhuzDM1M3lYOcw1wogCJg/5lyhsVu1Wx7Y2YThYKBXnLiZB7Z/9CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a6eed71dfb6539611e25f1785223b03de4fc4723a0d6a68d75d9507833a12624","last_reissued_at":"2026-05-18T00:10:28.145711Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:28.145711Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.03780","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":"2026-05-18T00:10:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w8K2KAuOgEvLzSNlcsFbf5PbLu1+w9LBj0fI3aiGj4ETPCT0kdZD5itFAXRL/19SNYNyRq64vasVeHrZ7q/rBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:30:55.369054Z"},"content_sha256":"b9c35a6e46a31878a2ef09823165b03285fcf1c98fcbf8d5c1ea55b9bc476dfa","schema_version":"1.0","event_id":"sha256:b9c35a6e46a31878a2ef09823165b03285fcf1c98fcbf8d5c1ea55b9bc476dfa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:U3XNOHP3MU4WCHRF6F4FEI5QHX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spontaneous decay of a soft optical phonon in the relaxor ferroelectric PbMg$_{1/3}$Nb$_{2/3}$O$_{3}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"C. Stock, D. Viehland, G. Xu, H. Luo, J. Li, P. M. Gehring, R. A. Ewings","submitted_at":"2018-02-11T17:57:28Z","abstract_excerpt":"We report the spontaneous decay of a soft, optical phonon in a solid. Using neutron spectroscopy, we find that specific phonon lifetimes in the relaxor PbMg$_{1/3}$Nb$_{2/3}$O$_{3}$ are anomalously short within well-defined ranges of energy and momentum. This behavior is independent of ferroelectric order and occurs when the optical phonon with a specific energy and momentum can kinematically decay into two acoustic phonons with lower phase velocity. We interpret the well-known relaxor \"waterfall\" effect as a form of quasiparticle decay analogous to that previously reported in quantum spin liq"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.03780","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":"2026-05-18T00:10:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tfGq6mzXh7Go9mNszD3c5XL5V57ZczZ9KBGEH3hVmODijvYrXyAMtyHj66G9AgIfbJDDOi4CKVqYoidyeqU5DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:30:55.369423Z"},"content_sha256":"fad11d38f2af64b41685b58649388b0040a4b487db5d21f75ee92e7177c50d67","schema_version":"1.0","event_id":"sha256:fad11d38f2af64b41685b58649388b0040a4b487db5d21f75ee92e7177c50d67"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U3XNOHP3MU4WCHRF6F4FEI5QHX/bundle.json","state_url":"https://pith.science/pith/U3XNOHP3MU4WCHRF6F4FEI5QHX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U3XNOHP3MU4WCHRF6F4FEI5QHX/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":"2026-05-30T20:30:55Z","links":{"resolver":"https://pith.science/pith/U3XNOHP3MU4WCHRF6F4FEI5QHX","bundle":"https://pith.science/pith/U3XNOHP3MU4WCHRF6F4FEI5QHX/bundle.json","state":"https://pith.science/pith/U3XNOHP3MU4WCHRF6F4FEI5QHX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U3XNOHP3MU4WCHRF6F4FEI5QHX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:U3XNOHP3MU4WCHRF6F4FEI5QHX","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":"4e32e7bfd4ba1a49613319e9e147b95c5e0b11863b2655fa03e8936a99049ecb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-02-11T17:57:28Z","title_canon_sha256":"3d573346f4cb7fa771eb1b0121845014ad602f1cf850669764346f68c22c1263"},"schema_version":"1.0","source":{"id":"1802.03780","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.03780","created_at":"2026-05-18T00:10:28Z"},{"alias_kind":"arxiv_version","alias_value":"1802.03780v1","created_at":"2026-05-18T00:10:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.03780","created_at":"2026-05-18T00:10:28Z"},{"alias_kind":"pith_short_12","alias_value":"U3XNOHP3MU4W","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"U3XNOHP3MU4WCHRF","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"U3XNOHP3","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:fad11d38f2af64b41685b58649388b0040a4b487db5d21f75ee92e7177c50d67","target":"graph","created_at":"2026-05-18T00:10:28Z","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 report the spontaneous decay of a soft, optical phonon in a solid. Using neutron spectroscopy, we find that specific phonon lifetimes in the relaxor PbMg$_{1/3}$Nb$_{2/3}$O$_{3}$ are anomalously short within well-defined ranges of energy and momentum. This behavior is independent of ferroelectric order and occurs when the optical phonon with a specific energy and momentum can kinematically decay into two acoustic phonons with lower phase velocity. We interpret the well-known relaxor \"waterfall\" effect as a form of quasiparticle decay analogous to that previously reported in quantum spin liq","authors_text":"C. Stock, D. Viehland, G. Xu, H. Luo, J. Li, P. M. Gehring, R. A. Ewings","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-02-11T17:57:28Z","title":"Spontaneous decay of a soft optical phonon in the relaxor ferroelectric PbMg$_{1/3}$Nb$_{2/3}$O$_{3}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.03780","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:b9c35a6e46a31878a2ef09823165b03285fcf1c98fcbf8d5c1ea55b9bc476dfa","target":"record","created_at":"2026-05-18T00:10:28Z","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":"4e32e7bfd4ba1a49613319e9e147b95c5e0b11863b2655fa03e8936a99049ecb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-02-11T17:57:28Z","title_canon_sha256":"3d573346f4cb7fa771eb1b0121845014ad602f1cf850669764346f68c22c1263"},"schema_version":"1.0","source":{"id":"1802.03780","kind":"arxiv","version":1}},"canonical_sha256":"a6eed71dfb6539611e25f1785223b03de4fc4723a0d6a68d75d9507833a12624","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a6eed71dfb6539611e25f1785223b03de4fc4723a0d6a68d75d9507833a12624","first_computed_at":"2026-05-18T00:10:28.145711Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:28.145711Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tPny8L4htjSE8IY1XpWIW9Xwy4Zb7+6SqDhuzDM1M3lYOcw1wogCJg/5lyhsVu1Wx7Y2YThYKBXnLiZB7Z/9CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:28.146271Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.03780","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9c35a6e46a31878a2ef09823165b03285fcf1c98fcbf8d5c1ea55b9bc476dfa","sha256:fad11d38f2af64b41685b58649388b0040a4b487db5d21f75ee92e7177c50d67"],"state_sha256":"750bfe9d2f7b5f06e444b682477f51e4e9309e6065ed2b77274f0398d0d7943a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vkp62ResohPKBuQevt1sjtD/zbHC7bYVD8BVyanyvYXCAtRrwoy1tU2wfO45t/JdUothNIgjLYwDXwaFLQiHCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T20:30:55.371401Z","bundle_sha256":"40de454f5103be9ce0d733e0a1eb48d9d97322c402eb67003f7b018222010d46"}}