{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:63GTXLRJPJ6R4W5ZVOEW7BQR3P","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":"be945a3a1a0f2b0a8f49faf09a05d15dff34b2d2c6df1c250692677a9da8dd1e","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2002-10-03T17:53:21Z","title_canon_sha256":"dfda28c6b24fb161922be3b08ef2b8e1db72ec5e3941b6541f4a88a6ff64c17c"},"schema_version":"1.0","source":{"id":"hep-th/0210030","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0210030","created_at":"2026-05-18T04:35:58Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0210030v3","created_at":"2026-05-18T04:35:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0210030","created_at":"2026-05-18T04:35:58Z"},{"alias_kind":"pith_short_12","alias_value":"63GTXLRJPJ6R","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"63GTXLRJPJ6R4W5Z","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"63GTXLRJ","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:04f2a61929ab28e635aa181005486eb046f9b27fd66206188b4bd6ecb30c5f72","target":"graph","created_at":"2026-05-18T04:35:58Z","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 compute a time-dependent noncommutativity parameter in a model with a time-dependent background, a space-time metric of the plane wave type supported by a Neveu-Schwarz two-form potential. This model is an open string version of the WZW model based on a non-semi-simple group previously studied by Nappi and Witten. The background we study is not conformally invariant. We consider a light-cone action for the sigma-model, compute the worldsheet propagator, and use it to derive a time-dependent noncommutativity parameter.","authors_text":"Chiara R. Nappi, Louise Dolan","cross_cats":[],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"2002-10-03T17:53:21Z","title":"Noncommutativity in a Time-Dependent Background"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0210030","kind":"arxiv","version":3},"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":"sha256:10a8e193605f45ca56ba59b1533192cb566198165a0fd02053ce334e4a956200","target":"record","created_at":"2026-05-18T04:35:58Z","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":"be945a3a1a0f2b0a8f49faf09a05d15dff34b2d2c6df1c250692677a9da8dd1e","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2002-10-03T17:53:21Z","title_canon_sha256":"dfda28c6b24fb161922be3b08ef2b8e1db72ec5e3941b6541f4a88a6ff64c17c"},"schema_version":"1.0","source":{"id":"hep-th/0210030","kind":"arxiv","version":3}},"canonical_sha256":"f6cd3bae297a7d1e5bb9ab896f8611dbd79589320557305c95e5c6c5b98f358f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6cd3bae297a7d1e5bb9ab896f8611dbd79589320557305c95e5c6c5b98f358f","first_computed_at":"2026-05-18T04:35:58.126005Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:35:58.126005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZpFeZD5wktxEm9cJXF1PHyB6bdYrtu1mYi7LaLOCWGfcEGRrpkuhObl2Gu5RzTd2vNIucIrJ5aCaejB0eu2rCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:35:58.126836Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/0210030","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10a8e193605f45ca56ba59b1533192cb566198165a0fd02053ce334e4a956200","sha256:04f2a61929ab28e635aa181005486eb046f9b27fd66206188b4bd6ecb30c5f72"],"state_sha256":"061d9bdaa7278861ab70162e60f85690f5ac523675a6029b1d8ce6e5056145ff"}