{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:6QWLKESMDE5DZLIOIPJKBGYFXZ","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":"dc6a0506086fafa4ce242c35d98b1656eae97fb0072c090f665aba53deb10ffd","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cond-mat.soft","submitted_at":"2009-12-11T17:15:19Z","title_canon_sha256":"d9905b3777fed6ac835085ec79215177ffad62a9d2fb5df29b1e6146e7aa5820"},"schema_version":"1.0","source":{"id":"0912.2283","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.2283","created_at":"2026-05-18T02:10:24Z"},{"alias_kind":"arxiv_version","alias_value":"0912.2283v1","created_at":"2026-05-18T02:10:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.2283","created_at":"2026-05-18T02:10:24Z"},{"alias_kind":"pith_short_12","alias_value":"6QWLKESMDE5D","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"6QWLKESMDE5DZLIO","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"6QWLKESM","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:33fb4aa4586ff6122ddf7fbc8edae5678b136d862c4638b4fba1f6fb3c4823dd","target":"graph","created_at":"2026-05-18T02:10:24Z","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":"We carry out a systematic construction of the coarse-grained dynamical equation of motion for the orientational order parameter for a two-dimensional active nematic, that is a nonequilibrium steady state with uniaxial, apolar orientational order. Using the dynamical renormalization group, we show that the leading nonlinearities in this equation are marginally \\textit{irrelevant}. We discover a special limit of parameters in which the equation of motion for the angle field of bears a close relation to the 2d stochastic Burgers equation. We find nevertheless that, unlike for the Burgers problem,","authors_text":"R. Aditi Simha, Shradha Mishra, Sriram Ramaswamy","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cond-mat.soft","submitted_at":"2009-12-11T17:15:19Z","title":"A Dynamic Renormalization Group Study of Active Nematics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.2283","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":"sha256:77845a42b4ade69480cab333285353434ff2885ba22cad8d2d09fff40c102eef","target":"record","created_at":"2026-05-18T02:10:24Z","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":"dc6a0506086fafa4ce242c35d98b1656eae97fb0072c090f665aba53deb10ffd","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cond-mat.soft","submitted_at":"2009-12-11T17:15:19Z","title_canon_sha256":"d9905b3777fed6ac835085ec79215177ffad62a9d2fb5df29b1e6146e7aa5820"},"schema_version":"1.0","source":{"id":"0912.2283","kind":"arxiv","version":1}},"canonical_sha256":"f42cb5124c193a3cad0e43d2a09b05be5292bc12a7ea7524e0a35466ce953493","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f42cb5124c193a3cad0e43d2a09b05be5292bc12a7ea7524e0a35466ce953493","first_computed_at":"2026-05-18T02:10:24.393736Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:24.393736Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"z8uFI1h01hRp5gt3uHlpXyUMo7GkEPq6hQ0/9JQLgYI44tUt3nr69m2VGS/DUm8oKPudV6jvkw8KvSzIrHLwCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:24.394171Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.2283","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77845a42b4ade69480cab333285353434ff2885ba22cad8d2d09fff40c102eef","sha256:33fb4aa4586ff6122ddf7fbc8edae5678b136d862c4638b4fba1f6fb3c4823dd"],"state_sha256":"fe8324e77178cf3596f7511fa7a85c85be9d8f2ab84b9a4b43569e60559a57c5"}