{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:REKKPDLHEUM7LYVQVE36RCU5QV","short_pith_number":"pith:REKKPDLH","canonical_record":{"source":{"id":"2605.26728","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-26T09:05:42Z","cross_cats_sorted":[],"title_canon_sha256":"2366d8a5e252c074ce33bf6e102b1edfd53ce392a835813d4f5023b2b5d4f0e7","abstract_canon_sha256":"257b3c08100b8e7b5572761c74ef271491f11ddbc0921c0830c09a7191421bbb"},"schema_version":"1.0"},"canonical_sha256":"8914a78d672519f5e2b0a937e88a9d856f89466147b846b1b3a701408e5b0b69","source":{"kind":"arxiv","id":"2605.26728","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.26728","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"arxiv_version","alias_value":"2605.26728v1","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.26728","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"pith_short_12","alias_value":"REKKPDLHEUM7","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"pith_short_16","alias_value":"REKKPDLHEUM7LYVQ","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"pith_short_8","alias_value":"REKKPDLH","created_at":"2026-05-27T01:06:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:REKKPDLHEUM7LYVQVE36RCU5QV","target":"record","payload":{"canonical_record":{"source":{"id":"2605.26728","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-26T09:05:42Z","cross_cats_sorted":[],"title_canon_sha256":"2366d8a5e252c074ce33bf6e102b1edfd53ce392a835813d4f5023b2b5d4f0e7","abstract_canon_sha256":"257b3c08100b8e7b5572761c74ef271491f11ddbc0921c0830c09a7191421bbb"},"schema_version":"1.0"},"canonical_sha256":"8914a78d672519f5e2b0a937e88a9d856f89466147b846b1b3a701408e5b0b69","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-27T01:06:09.592233Z","signature_b64":"LtFzAXdL9mvCjTs3dLB3+lD2k9fEZbWtlYHcYgkIyzeJAO8jQ/YQkign4lrkzSIwAEUuqXC94lccsky4lUBbAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8914a78d672519f5e2b0a937e88a9d856f89466147b846b1b3a701408e5b0b69","last_reissued_at":"2026-05-27T01:06:09.591424Z","signature_status":"signed_v1","first_computed_at":"2026-05-27T01:06:09.591424Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.26728","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":"2026-05-27T01:06:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"njQ5qntjzXYDVSpGQVRj6DwMJP7yKd+i4xDi/QnT0QNVsbLAG7LM2cR0Ibs01Qn+bumEiLJaR4Jvbd22BhQhAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:02:59.747778Z"},"content_sha256":"231832fc486c3eddbda9d3931ac7dfc97b254d790c3bc206b1da1141f3ef400a","schema_version":"1.0","event_id":"sha256:231832fc486c3eddbda9d3931ac7dfc97b254d790c3bc206b1da1141f3ef400a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:REKKPDLHEUM7LYVQVE36RCU5QV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Attractors in a Generalized Relativistic Second Order Spin Hydrodynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Ben-Wei Zhang, Duan She, Enke Wang, Qi Zhou","submitted_at":"2026-05-26T09:05:42Z","abstract_excerpt":"We investigate the attractor of spin density in relativistic spin hydrodynamics using Zubarev's non-equilibrium statistical operator formalism in the spin probe limit. We derive the (0+1)D Bjorken flow equations and the associated attractor equation while retaining second order gradient corrections in the relevant relaxation constitutive equations including couplings associated with nonlinear response and nonlocal memory effects. We analyze the early time fixed point structure and analytically determine the early time attractor solution, thereby clarifying branch selection and the role of diff"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.26728","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/2605.26728/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":"2026-05-27T01:06:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4fZ1m6KiVJ87WblK6onbl17pQuBnVv0DPZiusjHnINTC8qOScVipvZvLiDP3uRlrowS0DtxvGF+QyAj2iYKQCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:02:59.748854Z"},"content_sha256":"9d4d20b4703f05f1a5a35cca44a61b140bd5f68350cd11a921321317a50fde31","schema_version":"1.0","event_id":"sha256:9d4d20b4703f05f1a5a35cca44a61b140bd5f68350cd11a921321317a50fde31"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/REKKPDLHEUM7LYVQVE36RCU5QV/bundle.json","state_url":"https://pith.science/pith/REKKPDLHEUM7LYVQVE36RCU5QV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/REKKPDLHEUM7LYVQVE36RCU5QV/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":"2026-05-29T17:02:59Z","links":{"resolver":"https://pith.science/pith/REKKPDLHEUM7LYVQVE36RCU5QV","bundle":"https://pith.science/pith/REKKPDLHEUM7LYVQVE36RCU5QV/bundle.json","state":"https://pith.science/pith/REKKPDLHEUM7LYVQVE36RCU5QV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/REKKPDLHEUM7LYVQVE36RCU5QV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:REKKPDLHEUM7LYVQVE36RCU5QV","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":"257b3c08100b8e7b5572761c74ef271491f11ddbc0921c0830c09a7191421bbb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-26T09:05:42Z","title_canon_sha256":"2366d8a5e252c074ce33bf6e102b1edfd53ce392a835813d4f5023b2b5d4f0e7"},"schema_version":"1.0","source":{"id":"2605.26728","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.26728","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"arxiv_version","alias_value":"2605.26728v1","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.26728","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"pith_short_12","alias_value":"REKKPDLHEUM7","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"pith_short_16","alias_value":"REKKPDLHEUM7LYVQ","created_at":"2026-05-27T01:06:09Z"},{"alias_kind":"pith_short_8","alias_value":"REKKPDLH","created_at":"2026-05-27T01:06:09Z"}],"graph_snapshots":[{"event_id":"sha256:9d4d20b4703f05f1a5a35cca44a61b140bd5f68350cd11a921321317a50fde31","target":"graph","created_at":"2026-05-27T01:06:09Z","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/2605.26728/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the attractor of spin density in relativistic spin hydrodynamics using Zubarev's non-equilibrium statistical operator formalism in the spin probe limit. We derive the (0+1)D Bjorken flow equations and the associated attractor equation while retaining second order gradient corrections in the relevant relaxation constitutive equations including couplings associated with nonlinear response and nonlocal memory effects. We analyze the early time fixed point structure and analytically determine the early time attractor solution, thereby clarifying branch selection and the role of diff","authors_text":"Ben-Wei Zhang, Duan She, Enke Wang, Qi Zhou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-26T09:05:42Z","title":"Attractors in a Generalized Relativistic Second Order Spin Hydrodynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.26728","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":"sha256:231832fc486c3eddbda9d3931ac7dfc97b254d790c3bc206b1da1141f3ef400a","target":"record","created_at":"2026-05-27T01:06:09Z","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":"257b3c08100b8e7b5572761c74ef271491f11ddbc0921c0830c09a7191421bbb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-05-26T09:05:42Z","title_canon_sha256":"2366d8a5e252c074ce33bf6e102b1edfd53ce392a835813d4f5023b2b5d4f0e7"},"schema_version":"1.0","source":{"id":"2605.26728","kind":"arxiv","version":1}},"canonical_sha256":"8914a78d672519f5e2b0a937e88a9d856f89466147b846b1b3a701408e5b0b69","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8914a78d672519f5e2b0a937e88a9d856f89466147b846b1b3a701408e5b0b69","first_computed_at":"2026-05-27T01:06:09.591424Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-27T01:06:09.591424Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LtFzAXdL9mvCjTs3dLB3+lD2k9fEZbWtlYHcYgkIyzeJAO8jQ/YQkign4lrkzSIwAEUuqXC94lccsky4lUBbAA==","signature_status":"signed_v1","signed_at":"2026-05-27T01:06:09.592233Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.26728","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:231832fc486c3eddbda9d3931ac7dfc97b254d790c3bc206b1da1141f3ef400a","sha256:9d4d20b4703f05f1a5a35cca44a61b140bd5f68350cd11a921321317a50fde31"],"state_sha256":"4e4b3b78d8ff4e8093d89e1a39b597f7138dbb25a9e8199f3361343a22f8967f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pgl347oAocSXAkKRxg37FBPeIoiBOb/t5lsfHoWGqMwtPiJZ1tG0Ke3/L0F/5W6XSfBW94IFonPw7shsv+pWAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T17:02:59.752692Z","bundle_sha256":"ad4ec1d7c12d9ba063872fdfe962a12f9a1bb77d0984f22a634a79045774de08"}}