{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:OOUOCQRNF6XTT4VV2MVENH6SGD","short_pith_number":"pith:OOUOCQRN","canonical_record":{"source":{"id":"1905.10463","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-05-24T22:07:36Z","cross_cats_sorted":["hep-th","nucl-th"],"title_canon_sha256":"00b4b5b32ea10ee162daba9ab6807755b6d57eeecb97d8e8897e7d734e00b5c8","abstract_canon_sha256":"4edece36ac00ac77b8fd8280e152e0eaf3f351490bc7017dd1c4870efe736307"},"schema_version":"1.0"},"canonical_sha256":"73a8e1422d2faf39f2b5d32a469fd230e085850396fa002512f2df62d323fee4","source":{"kind":"arxiv","id":"1905.10463","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.10463","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"arxiv_version","alias_value":"1905.10463v1","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.10463","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"pith_short_12","alias_value":"OOUOCQRNF6XT","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"pith_short_16","alias_value":"OOUOCQRNF6XTT4VV","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"pith_short_8","alias_value":"OOUOCQRN","created_at":"2026-07-05T00:07:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:OOUOCQRNF6XTT4VV2MVENH6SGD","target":"record","payload":{"canonical_record":{"source":{"id":"1905.10463","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-05-24T22:07:36Z","cross_cats_sorted":["hep-th","nucl-th"],"title_canon_sha256":"00b4b5b32ea10ee162daba9ab6807755b6d57eeecb97d8e8897e7d734e00b5c8","abstract_canon_sha256":"4edece36ac00ac77b8fd8280e152e0eaf3f351490bc7017dd1c4870efe736307"},"schema_version":"1.0"},"canonical_sha256":"73a8e1422d2faf39f2b5d32a469fd230e085850396fa002512f2df62d323fee4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:07:51.936950Z","signature_b64":"U8drckBLEA9BMQv1B4bam1BqxGigEaeDVXHn5z3Wr5mw+47pnzX2P7J/jefbUlGdhrjtKWQoGMQKfLxpt16VAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"73a8e1422d2faf39f2b5d32a469fd230e085850396fa002512f2df62d323fee4","last_reissued_at":"2026-07-05T00:07:51.936492Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:07:51.936492Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.10463","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":"2026-07-05T00:07:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+GZNg7G60KICRFV8ZROq8h6CRW6DmsT+1BqXebwqqigaQRmObblq8CBTH+9fiJaUFLUl+I0W7TfHhfIQwS6ZAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T19:15:56.616977Z"},"content_sha256":"169e44233e63fbdf8b5358256b893aa8062a7ade7695eb97f853d7bbfc3a4ad0","schema_version":"1.0","event_id":"sha256:169e44233e63fbdf8b5358256b893aa8062a7ade7695eb97f853d7bbfc3a4ad0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:OOUOCQRNF6XTT4VV2MVENH6SGD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Kinetic Theory of Spin Polarization of Massive Quarks in Perturbative QCD: Leading Log","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th","nucl-th"],"primary_cat":"hep-ph","authors_text":"Ho-Ung Yee, Shiyong Li","submitted_at":"2019-05-24T22:07:36Z","abstract_excerpt":"We present the quantum kinetic equation for spin polarization of massive quarks in leading log order of perturbative QCD, which describes time evolution of the spin density matrix in momentum space of a massive quark interacting with a background QCD plasma. We find that the time evolution operator of the spin density matrix, or the quantum kinetic collision terms, are universally of order $\\alpha_s^2\\log(1/\\alpha_s)$ in terms of the QCD coupling constant $\\alpha_s=g^2/(4\\pi)$. Our quantum kinetic equation is valid for an arbitrary quark mass $m\\gg m_D\\sim gT$, where $m_D$ is the Debye mass, a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.10463","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/1905.10463/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:07:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FPoZo51sH8ByMq60ilshKvB1GE5tV9Nd1E4QwYh8LMClqlEOp4oZ5Dh6wCxWTfmQDsXzYxBYjC8Kxy120eiMCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T19:15:56.617513Z"},"content_sha256":"be2997b9bf4e355b24f84c75283ddc56a2f6ba9e1652ebed1712fe238a5f2224","schema_version":"1.0","event_id":"sha256:be2997b9bf4e355b24f84c75283ddc56a2f6ba9e1652ebed1712fe238a5f2224"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OOUOCQRNF6XTT4VV2MVENH6SGD/bundle.json","state_url":"https://pith.science/pith/OOUOCQRNF6XTT4VV2MVENH6SGD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OOUOCQRNF6XTT4VV2MVENH6SGD/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":"2026-08-13T19:15:56Z","links":{"resolver":"https://pith.science/pith/OOUOCQRNF6XTT4VV2MVENH6SGD","bundle":"https://pith.science/pith/OOUOCQRNF6XTT4VV2MVENH6SGD/bundle.json","state":"https://pith.science/pith/OOUOCQRNF6XTT4VV2MVENH6SGD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OOUOCQRNF6XTT4VV2MVENH6SGD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OOUOCQRNF6XTT4VV2MVENH6SGD","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":"4edece36ac00ac77b8fd8280e152e0eaf3f351490bc7017dd1c4870efe736307","cross_cats_sorted":["hep-th","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-05-24T22:07:36Z","title_canon_sha256":"00b4b5b32ea10ee162daba9ab6807755b6d57eeecb97d8e8897e7d734e00b5c8"},"schema_version":"1.0","source":{"id":"1905.10463","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.10463","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"arxiv_version","alias_value":"1905.10463v1","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.10463","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"pith_short_12","alias_value":"OOUOCQRNF6XT","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"pith_short_16","alias_value":"OOUOCQRNF6XTT4VV","created_at":"2026-07-05T00:07:51Z"},{"alias_kind":"pith_short_8","alias_value":"OOUOCQRN","created_at":"2026-07-05T00:07:51Z"}],"graph_snapshots":[{"event_id":"sha256:be2997b9bf4e355b24f84c75283ddc56a2f6ba9e1652ebed1712fe238a5f2224","target":"graph","created_at":"2026-07-05T00:07:51Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1905.10463/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the quantum kinetic equation for spin polarization of massive quarks in leading log order of perturbative QCD, which describes time evolution of the spin density matrix in momentum space of a massive quark interacting with a background QCD plasma. We find that the time evolution operator of the spin density matrix, or the quantum kinetic collision terms, are universally of order $\\alpha_s^2\\log(1/\\alpha_s)$ in terms of the QCD coupling constant $\\alpha_s=g^2/(4\\pi)$. Our quantum kinetic equation is valid for an arbitrary quark mass $m\\gg m_D\\sim gT$, where $m_D$ is the Debye mass, a","authors_text":"Ho-Ung Yee, Shiyong Li","cross_cats":["hep-th","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-05-24T22:07:36Z","title":"Quantum Kinetic Theory of Spin Polarization of Massive Quarks in Perturbative QCD: Leading Log"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.10463","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":"sha256:169e44233e63fbdf8b5358256b893aa8062a7ade7695eb97f853d7bbfc3a4ad0","target":"record","created_at":"2026-07-05T00:07:51Z","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":"4edece36ac00ac77b8fd8280e152e0eaf3f351490bc7017dd1c4870efe736307","cross_cats_sorted":["hep-th","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-05-24T22:07:36Z","title_canon_sha256":"00b4b5b32ea10ee162daba9ab6807755b6d57eeecb97d8e8897e7d734e00b5c8"},"schema_version":"1.0","source":{"id":"1905.10463","kind":"arxiv","version":1}},"canonical_sha256":"73a8e1422d2faf39f2b5d32a469fd230e085850396fa002512f2df62d323fee4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"73a8e1422d2faf39f2b5d32a469fd230e085850396fa002512f2df62d323fee4","first_computed_at":"2026-07-05T00:07:51.936492Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:07:51.936492Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U8drckBLEA9BMQv1B4bam1BqxGigEaeDVXHn5z3Wr5mw+47pnzX2P7J/jefbUlGdhrjtKWQoGMQKfLxpt16VAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:07:51.936950Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.10463","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:169e44233e63fbdf8b5358256b893aa8062a7ade7695eb97f853d7bbfc3a4ad0","sha256:be2997b9bf4e355b24f84c75283ddc56a2f6ba9e1652ebed1712fe238a5f2224"],"state_sha256":"025f7dc5c23c97e1621e0efe85cfb055a696ab189aaa00c205eb760799dbea31"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OJH7SLowbi67YQDNhAPzn8rUy5AeukTLEGqKACaI3ArvXw0rFMvnDuroEqjfo4PiYmkWzt2SF3HaH+D4yV8mBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T19:15:56.660200Z","bundle_sha256":"a069975fb98e3f49ad0102eb3dc21f6bb39b588cd31d2ca1d90af9211a3c1ea8"}}