{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:KB5RCQWCSL2DGSJBDGTNI2PYP2","short_pith_number":"pith:KB5RCQWC","canonical_record":{"source":{"id":"1510.06471","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-22T01:39:47Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e27f1d357f5b342352170ebb5694d10d1579214527c07452d8cb9e5d02496af2","abstract_canon_sha256":"d084a56f24608f3868a6f3f9875a41835fac1a16eca128b64ddaaf015e53d2d7"},"schema_version":"1.0"},"canonical_sha256":"507b1142c292f433492119a6d469f87e8a7d609b77372ec6e017e70dae42e1b6","source":{"kind":"arxiv","id":"1510.06471","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.06471","created_at":"2026-05-18T01:29:30Z"},{"alias_kind":"arxiv_version","alias_value":"1510.06471v1","created_at":"2026-05-18T01:29:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.06471","created_at":"2026-05-18T01:29:30Z"},{"alias_kind":"pith_short_12","alias_value":"KB5RCQWCSL2D","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"KB5RCQWCSL2DGSJB","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"KB5RCQWC","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:KB5RCQWCSL2DGSJBDGTNI2PYP2","target":"record","payload":{"canonical_record":{"source":{"id":"1510.06471","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-22T01:39:47Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e27f1d357f5b342352170ebb5694d10d1579214527c07452d8cb9e5d02496af2","abstract_canon_sha256":"d084a56f24608f3868a6f3f9875a41835fac1a16eca128b64ddaaf015e53d2d7"},"schema_version":"1.0"},"canonical_sha256":"507b1142c292f433492119a6d469f87e8a7d609b77372ec6e017e70dae42e1b6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:30.888478Z","signature_b64":"DOtIo9pesOGDn7NUERWJIachv/oQ1WfN7igUs/qjR5kToj0tsbfxNODOQvhWllCMmwGQA2LgxQ+SCNQZVorZDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"507b1142c292f433492119a6d469f87e8a7d609b77372ec6e017e70dae42e1b6","last_reissued_at":"2026-05-18T01:29:30.887777Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:30.887777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.06471","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":"2026-05-18T01:29:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aFeIC5nFhtuFgnekHjEgFa310X0FEN0kbw26WBnFW5jlB+Ip7gsbsK0TFEzhdHW6Zvrc2Aj4pWWW630crGFsAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:29:17.029123Z"},"content_sha256":"b618d657ff446bd9804243fbae020a1aa8bbbdff1ec525003ace5132c6340377","schema_version":"1.0","event_id":"sha256:b618d657ff446bd9804243fbae020a1aa8bbbdff1ec525003ace5132c6340377"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:KB5RCQWCSL2DGSJBDGTNI2PYP2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Accurate theoretical prediction on positron lifetime of bulk materials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.comp-ph","authors_text":"BangJiao Ye, Bingchuan Gu, Jiandang Liu, Wenshuai Zhang","submitted_at":"2015-10-22T01:39:47Z","abstract_excerpt":"Based on the first-principles calculations, we perform an initiatory statistical assessment on the reliability level of theoretical positron lifetime of bulk material. We found the original generalized gradient approximation (GGA) form of the enhancement factor and correlation potentials overestimates the effect of the gradient factor. Furthermore, an excellent agreement between model and data with the difference being the noise level of the data is found in this work. In addition, we suggest a new GGA form of the correlation scheme which gives the best performance. This work demonstrates that"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.06471","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":"2026-05-18T01:29:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MRvkgMxXFyjtG73ASBbKJDPwN1JNHzn0nDCZxQdqmjE/SIPwaRF9UzuNnk6wmi/xSXalHoi6ApRxG81qWQ0ICQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:29:17.029539Z"},"content_sha256":"dc6464443fa477e5a126276ebb6b3ecc5408117cf8901480b34554502eb4e22a","schema_version":"1.0","event_id":"sha256:dc6464443fa477e5a126276ebb6b3ecc5408117cf8901480b34554502eb4e22a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KB5RCQWCSL2DGSJBDGTNI2PYP2/bundle.json","state_url":"https://pith.science/pith/KB5RCQWCSL2DGSJBDGTNI2PYP2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KB5RCQWCSL2DGSJBDGTNI2PYP2/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":"2026-05-28T16:29:17Z","links":{"resolver":"https://pith.science/pith/KB5RCQWCSL2DGSJBDGTNI2PYP2","bundle":"https://pith.science/pith/KB5RCQWCSL2DGSJBDGTNI2PYP2/bundle.json","state":"https://pith.science/pith/KB5RCQWCSL2DGSJBDGTNI2PYP2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KB5RCQWCSL2DGSJBDGTNI2PYP2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:KB5RCQWCSL2DGSJBDGTNI2PYP2","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":"d084a56f24608f3868a6f3f9875a41835fac1a16eca128b64ddaaf015e53d2d7","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-22T01:39:47Z","title_canon_sha256":"e27f1d357f5b342352170ebb5694d10d1579214527c07452d8cb9e5d02496af2"},"schema_version":"1.0","source":{"id":"1510.06471","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.06471","created_at":"2026-05-18T01:29:30Z"},{"alias_kind":"arxiv_version","alias_value":"1510.06471v1","created_at":"2026-05-18T01:29:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.06471","created_at":"2026-05-18T01:29:30Z"},{"alias_kind":"pith_short_12","alias_value":"KB5RCQWCSL2D","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"KB5RCQWCSL2DGSJB","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"KB5RCQWC","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:dc6464443fa477e5a126276ebb6b3ecc5408117cf8901480b34554502eb4e22a","target":"graph","created_at":"2026-05-18T01:29:30Z","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":"Based on the first-principles calculations, we perform an initiatory statistical assessment on the reliability level of theoretical positron lifetime of bulk material. We found the original generalized gradient approximation (GGA) form of the enhancement factor and correlation potentials overestimates the effect of the gradient factor. Furthermore, an excellent agreement between model and data with the difference being the noise level of the data is found in this work. In addition, we suggest a new GGA form of the correlation scheme which gives the best performance. This work demonstrates that","authors_text":"BangJiao Ye, Bingchuan Gu, Jiandang Liu, Wenshuai Zhang","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-22T01:39:47Z","title":"Accurate theoretical prediction on positron lifetime of bulk materials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.06471","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:b618d657ff446bd9804243fbae020a1aa8bbbdff1ec525003ace5132c6340377","target":"record","created_at":"2026-05-18T01:29:30Z","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":"d084a56f24608f3868a6f3f9875a41835fac1a16eca128b64ddaaf015e53d2d7","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-22T01:39:47Z","title_canon_sha256":"e27f1d357f5b342352170ebb5694d10d1579214527c07452d8cb9e5d02496af2"},"schema_version":"1.0","source":{"id":"1510.06471","kind":"arxiv","version":1}},"canonical_sha256":"507b1142c292f433492119a6d469f87e8a7d609b77372ec6e017e70dae42e1b6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"507b1142c292f433492119a6d469f87e8a7d609b77372ec6e017e70dae42e1b6","first_computed_at":"2026-05-18T01:29:30.887777Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:30.887777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DOtIo9pesOGDn7NUERWJIachv/oQ1WfN7igUs/qjR5kToj0tsbfxNODOQvhWllCMmwGQA2LgxQ+SCNQZVorZDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:30.888478Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.06471","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b618d657ff446bd9804243fbae020a1aa8bbbdff1ec525003ace5132c6340377","sha256:dc6464443fa477e5a126276ebb6b3ecc5408117cf8901480b34554502eb4e22a"],"state_sha256":"ce52b2756dcb8dbade899adee4b0d90a13dafdad48913337dea3bb94a8955193"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VwLTv1AhCw8SIGD+1l0dpc7QMsWThxBiZGq0tZ9cDbMXj6SJ/xI+b6ZqLMiU5LQpHUm2gIit8gnCedXv+ip6DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T16:29:17.031760Z","bundle_sha256":"abce8a7287f9deabd9e418e1a2c5c10b2d7b8631b06ceb0f761f8d3010919581"}}