{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:BC5B253RJEHYPNDQU6JVPIBNR7","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":"484e88a4310607aea2836b4eb75d5f2c06bc99b2c2bf5338b44021b8bd915871","cross_cats_sorted":["cond-mat.mtrl-sci","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-06-18T10:23:24Z","title_canon_sha256":"77b3b975fee54589f96f57a610c18042af7119f4f29205eb620e2d73432a2e23"},"schema_version":"1.0","source":{"id":"2606.20049","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.20049","created_at":"2026-06-19T16:13:01Z"},{"alias_kind":"arxiv_version","alias_value":"2606.20049v1","created_at":"2026-06-19T16:13:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.20049","created_at":"2026-06-19T16:13:01Z"},{"alias_kind":"pith_short_12","alias_value":"BC5B253RJEHY","created_at":"2026-06-19T16:13:01Z"},{"alias_kind":"pith_short_16","alias_value":"BC5B253RJEHYPNDQ","created_at":"2026-06-19T16:13:01Z"},{"alias_kind":"pith_short_8","alias_value":"BC5B253R","created_at":"2026-06-19T16:13:01Z"}],"graph_snapshots":[{"event_id":"sha256:781309ac964fdb5bc2a629768f9abbd8ebd6e595aa5a80e778e468bbb872ae96","target":"graph","created_at":"2026-06-19T16:13:01Z","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/2606.20049/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We develop a molecularly motivated description of the nonlinear index (NLI) in oscillatory shear deformation of entangled polymers. The central assumption is that the shear component of the tube-orientation tensor cannot grow without bound. Convective constraint release (CCR), chain stretch, and tube dilation progressively reduce the number and lifetime of orientational constraints, but the maximum shear alignment of a tube segment is geometrically limited by $S_{xy}\\leq 1/2$. This motivates a constraint-limited orientation closure in which the NLI first grows approximately with strain amplitu","authors_text":"Alessio Zaccone, Dario Nichetti","cross_cats":["cond-mat.mtrl-sci","physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-06-18T10:23:24Z","title":"Constraint-Limited Tube Orientation of Entangled Polymers in Oscillatory Shear Deformation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.20049","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":"sha256:27276c850400d9bce786521ee779ae752d932090e96b5d3300b130140fdd74e2","target":"record","created_at":"2026-06-19T16:13:01Z","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":"484e88a4310607aea2836b4eb75d5f2c06bc99b2c2bf5338b44021b8bd915871","cross_cats_sorted":["cond-mat.mtrl-sci","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-06-18T10:23:24Z","title_canon_sha256":"77b3b975fee54589f96f57a610c18042af7119f4f29205eb620e2d73432a2e23"},"schema_version":"1.0","source":{"id":"2606.20049","kind":"arxiv","version":1}},"canonical_sha256":"08ba1d7771490f87b470a79357a02d8fddd4e9613df8d868d6bea7efa5b10b7a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"08ba1d7771490f87b470a79357a02d8fddd4e9613df8d868d6bea7efa5b10b7a","first_computed_at":"2026-06-19T16:13:01.574080Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:13:01.574080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MWzVwh+Al0ikA9QQvR6wW3RJhWuaeb86eGfTy8us63COZ8HiDpwIScn5r7W6CFPIVzVYMrBzxZfn6GQkN8VYBg==","signature_status":"signed_v1","signed_at":"2026-06-19T16:13:01.574482Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.20049","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27276c850400d9bce786521ee779ae752d932090e96b5d3300b130140fdd74e2","sha256:781309ac964fdb5bc2a629768f9abbd8ebd6e595aa5a80e778e468bbb872ae96"],"state_sha256":"ff5e85ef2b70fbdceebec392503a5c5e4b8b1d69b5a175f5cd0247d910f772bf"}