{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:WQ2A6WV25XE2SPHYQZDPZO457S","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":"399d3a2dfa3fc0e8719a09d83ef00e672fe02972ab7bda25f9ca14e3b4583395","cross_cats_sorted":[],"license":"","primary_cat":"hep-lat","submitted_at":"1997-09-30T14:49:02Z","title_canon_sha256":"da2e386a179cc1ed0f9016c19835d1c61f27aa6b3e886bf4a5307a2a579fc08d"},"schema_version":"1.0","source":{"id":"hep-lat/9709157","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-lat/9709157","created_at":"2026-05-18T04:35:25Z"},{"alias_kind":"arxiv_version","alias_value":"hep-lat/9709157v1","created_at":"2026-05-18T04:35:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-lat/9709157","created_at":"2026-05-18T04:35:25Z"},{"alias_kind":"pith_short_12","alias_value":"WQ2A6WV25XE2","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"WQ2A6WV25XE2SPHY","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"WQ2A6WV2","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:ae63824653a1ca8d573eaeb8dd18465ca8e3efd6dee825fb92ec116adc5404dd","target":"graph","created_at":"2026-05-18T04:35:25Z","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 introduce a class of improved actions for staggered fermions which to O(p^4) and O(p^6), respectively, lead to rotationally invariant propagators. We discuss the resulting reduction of flavour symmetry breaking in the meson spectrum and comment on the improvement in the calculation of thermodynamic observables.","authors_text":"A. Bicker, A. Peikert, B. Beinlich, E. Laermann, F. Karsch","cross_cats":[],"headline":"","license":"","primary_cat":"hep-lat","submitted_at":"1997-09-30T14:49:02Z","title":"Staggered Fermion Actions with Improved Rotational Invariance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-lat/9709157","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:fb5d5457abbe7af850caa32bc7099b6594d4b44e974e4257f404b22446397eac","target":"record","created_at":"2026-05-18T04:35:25Z","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":"399d3a2dfa3fc0e8719a09d83ef00e672fe02972ab7bda25f9ca14e3b4583395","cross_cats_sorted":[],"license":"","primary_cat":"hep-lat","submitted_at":"1997-09-30T14:49:02Z","title_canon_sha256":"da2e386a179cc1ed0f9016c19835d1c61f27aa6b3e886bf4a5307a2a579fc08d"},"schema_version":"1.0","source":{"id":"hep-lat/9709157","kind":"arxiv","version":1}},"canonical_sha256":"b4340f5abaedc9a93cf88646fcbb9dfcbd747427960a9dd1b00023d98bd5f522","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4340f5abaedc9a93cf88646fcbb9dfcbd747427960a9dd1b00023d98bd5f522","first_computed_at":"2026-05-18T04:35:25.309128Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:35:25.309128Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UtQuy0v6OXJTjVOBOUZ+sLhBjUs1iZZj+xLPm6IIMFi9E4GALdMX5btwBReMcc+MmKwzsaixaOvZrFokCm+8Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T04:35:25.309683Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-lat/9709157","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb5d5457abbe7af850caa32bc7099b6594d4b44e974e4257f404b22446397eac","sha256:ae63824653a1ca8d573eaeb8dd18465ca8e3efd6dee825fb92ec116adc5404dd"],"state_sha256":"4cac613ac977b21838b566603d71046b70e2d533d74a1d8951a23cc230374fd5"}