{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:SYL3UOXCOBREANFY4HZES5F47E","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":"de076833220027efeab9c5184302748bd28601c3d656d2cae1bcf3d4eaa9ad28","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2008-12-12T16:43:07Z","title_canon_sha256":"0f23a4694c3883b4531155d9153d4866678f7a86496789cea0ab8f44c74c3023"},"schema_version":"1.0","source":{"id":"0812.2422","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.2422","created_at":"2026-07-04T17:26:46Z"},{"alias_kind":"arxiv_version","alias_value":"0812.2422v4","created_at":"2026-07-04T17:26:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.2422","created_at":"2026-07-04T17:26:46Z"},{"alias_kind":"pith_short_12","alias_value":"SYL3UOXCOBRE","created_at":"2026-07-04T17:26:46Z"},{"alias_kind":"pith_short_16","alias_value":"SYL3UOXCOBREANFY","created_at":"2026-07-04T17:26:46Z"},{"alias_kind":"pith_short_8","alias_value":"SYL3UOXC","created_at":"2026-07-04T17:26:46Z"}],"graph_snapshots":[{"event_id":"sha256:dbdcc5393d075b3b5cf66f9f8ba34a7012ba2a26ecfd87d868261e847d9f7b6f","target":"graph","created_at":"2026-07-04T17:26:46Z","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/0812.2422/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ultrarelativistic heavy-ion collisions at the Relativistic Heavy-Ion Collider (RHIC) are thought to have produced a state of matter called the Quark-Gluon-Plasma, characterized by a very small shear viscosity to entropy density ratio $\\eta/s$, near the lower bound predicted for that quantity by Anti-deSitter space/Conformal Field Theory (AdS/CFT) methods. As the produced matter expands and cools, it evolves through a phase described by a hadron gas with rapidly increasing $\\eta/s$. We calculate $\\eta/s$ as a function of temperature in this phase and find that its value poses a challenge for vi","authors_text":"Nasser Demir, Steffen A. Bass","cross_cats":["hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2008-12-12T16:43:07Z","title":"Shear-Viscosity to Entropy Density Ratio of a Relativistic Hadron Gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.2422","kind":"arxiv","version":4},"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:ef4bfe90ce04375a8ea7282feb85b336383c461104bf5e5827ca84f77343f6be","target":"record","created_at":"2026-07-04T17:26:46Z","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":"de076833220027efeab9c5184302748bd28601c3d656d2cae1bcf3d4eaa9ad28","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2008-12-12T16:43:07Z","title_canon_sha256":"0f23a4694c3883b4531155d9153d4866678f7a86496789cea0ab8f44c74c3023"},"schema_version":"1.0","source":{"id":"0812.2422","kind":"arxiv","version":4}},"canonical_sha256":"9617ba3ae270624034b8e1f24974bcf927b5886cbdecb197b28dd15cf35bef56","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9617ba3ae270624034b8e1f24974bcf927b5886cbdecb197b28dd15cf35bef56","first_computed_at":"2026-07-04T17:26:46.587162Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:26:46.587162Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mUZM3IS8w1DbcBDm2NtT/i/MjekDB3ihPY0oF6On+UWxRQclSrizTieL0z47+f1+mY9LqJ95Hh+ZnrQNVezZCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:26:46.587613Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.2422","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ef4bfe90ce04375a8ea7282feb85b336383c461104bf5e5827ca84f77343f6be","sha256:dbdcc5393d075b3b5cf66f9f8ba34a7012ba2a26ecfd87d868261e847d9f7b6f"],"state_sha256":"c6be452d69e58d9ba784916c432dadf9540764515ff460c22e39bf3974ddaefb"}