{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:VT66UBGDFFDNDEWLVZK45APE5S","short_pith_number":"pith:VT66UBGD","canonical_record":{"source":{"id":"hep-lat/0610094","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-lat","submitted_at":"2006-10-15T19:56:47Z","cross_cats_sorted":["hep-ph","hep-th"],"title_canon_sha256":"e05759ca3d375b184db8f00bffd6b85e20b2919c861830c4339338ad92fc9663","abstract_canon_sha256":"2de12c69caa851b3ee3e1c95ca28447693b4d0dcfffb39cb544610676ecb5c8e"},"schema_version":"1.0"},"canonical_sha256":"acfdea04c32946d192cbae55ce81e4ecb6638556f8f1611c106e22ff795ccc37","source":{"kind":"arxiv","id":"hep-lat/0610094","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-lat/0610094","created_at":"2026-05-18T04:23:00Z"},{"alias_kind":"arxiv_version","alias_value":"hep-lat/0610094v1","created_at":"2026-05-18T04:23:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-lat/0610094","created_at":"2026-05-18T04:23:00Z"},{"alias_kind":"pith_short_12","alias_value":"VT66UBGDFFDN","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"VT66UBGDFFDNDEWL","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"VT66UBGD","created_at":"2026-05-18T12:25:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:VT66UBGDFFDNDEWLVZK45APE5S","target":"record","payload":{"canonical_record":{"source":{"id":"hep-lat/0610094","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-lat","submitted_at":"2006-10-15T19:56:47Z","cross_cats_sorted":["hep-ph","hep-th"],"title_canon_sha256":"e05759ca3d375b184db8f00bffd6b85e20b2919c861830c4339338ad92fc9663","abstract_canon_sha256":"2de12c69caa851b3ee3e1c95ca28447693b4d0dcfffb39cb544610676ecb5c8e"},"schema_version":"1.0"},"canonical_sha256":"acfdea04c32946d192cbae55ce81e4ecb6638556f8f1611c106e22ff795ccc37","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:23:00.148757Z","signature_b64":"ZuKZ8WD0yjK5wCYIieqbj6RcH+LLDGKT1O4hE5IYllBpJgRNb7aVrQb0lpHja1Njd2l5FQII+0NH9XaUyPLmAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"acfdea04c32946d192cbae55ce81e4ecb6638556f8f1611c106e22ff795ccc37","last_reissued_at":"2026-05-18T04:23:00.148167Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:23:00.148167Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-lat/0610094","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:23:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BvMWj/u2misM3l4bQRyGLaqbpVIP85xgYuFwWU1XG0f7LkFIaXuYabAQd9CovuHRo0J19efLSdZT0muw5YZPCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T08:44:05.487512Z"},"content_sha256":"3a10474857f9c3f83d2d3c59e0cbe61ae092627f54a5e90b58dc3c9094fb369b","schema_version":"1.0","event_id":"sha256:3a10474857f9c3f83d2d3c59e0cbe61ae092627f54a5e90b58dc3c9094fb369b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:VT66UBGDFFDNDEWLVZK45APE5S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rooted staggered fermions: good, bad or ugly?","license":"","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"hep-lat","authors_text":"Stephen R. Sharpe","submitted_at":"2006-10-15T19:56:47Z","abstract_excerpt":"I give a status report on the validity of the so-called ``fourth-root trick'', i.e. the procedure of representing the determinant for a single fermion by the fourth root of the staggered fermion determinant. This has been used by the MILC collaboration to create a large ensemble of lattices using which many quantities of physical interest have been and are being calculated. It is also used extensively in studies of QCD thermodynamics. The main question is whether the theory so defined has the correct continuum limit. There has been significant recent progress towards answering this question. A"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-lat/0610094","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:23:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eQnjunGfKDzoKEP/dIRhmCKVP7IjBiqCMoneOaWnjbuDirJpao9lfCBHK+PUe3meoI0DgnwVhMPbVX0BQEY5DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T08:44:05.487874Z"},"content_sha256":"556e8ab1936398a95d6b731293d464f7daa254bf20661bfbd7bd78a4791409b6","schema_version":"1.0","event_id":"sha256:556e8ab1936398a95d6b731293d464f7daa254bf20661bfbd7bd78a4791409b6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VT66UBGDFFDNDEWLVZK45APE5S/bundle.json","state_url":"https://pith.science/pith/VT66UBGDFFDNDEWLVZK45APE5S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VT66UBGDFFDNDEWLVZK45APE5S/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-05T08:44:05Z","links":{"resolver":"https://pith.science/pith/VT66UBGDFFDNDEWLVZK45APE5S","bundle":"https://pith.science/pith/VT66UBGDFFDNDEWLVZK45APE5S/bundle.json","state":"https://pith.science/pith/VT66UBGDFFDNDEWLVZK45APE5S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VT66UBGDFFDNDEWLVZK45APE5S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:VT66UBGDFFDNDEWLVZK45APE5S","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":"2de12c69caa851b3ee3e1c95ca28447693b4d0dcfffb39cb544610676ecb5c8e","cross_cats_sorted":["hep-ph","hep-th"],"license":"","primary_cat":"hep-lat","submitted_at":"2006-10-15T19:56:47Z","title_canon_sha256":"e05759ca3d375b184db8f00bffd6b85e20b2919c861830c4339338ad92fc9663"},"schema_version":"1.0","source":{"id":"hep-lat/0610094","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-lat/0610094","created_at":"2026-05-18T04:23:00Z"},{"alias_kind":"arxiv_version","alias_value":"hep-lat/0610094v1","created_at":"2026-05-18T04:23:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-lat/0610094","created_at":"2026-05-18T04:23:00Z"},{"alias_kind":"pith_short_12","alias_value":"VT66UBGDFFDN","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"VT66UBGDFFDNDEWL","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"VT66UBGD","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:556e8ab1936398a95d6b731293d464f7daa254bf20661bfbd7bd78a4791409b6","target":"graph","created_at":"2026-05-18T04:23:00Z","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":"I give a status report on the validity of the so-called ``fourth-root trick'', i.e. the procedure of representing the determinant for a single fermion by the fourth root of the staggered fermion determinant. This has been used by the MILC collaboration to create a large ensemble of lattices using which many quantities of physical interest have been and are being calculated. It is also used extensively in studies of QCD thermodynamics. The main question is whether the theory so defined has the correct continuum limit. There has been significant recent progress towards answering this question. A","authors_text":"Stephen R. Sharpe","cross_cats":["hep-ph","hep-th"],"headline":"","license":"","primary_cat":"hep-lat","submitted_at":"2006-10-15T19:56:47Z","title":"Rooted staggered fermions: good, bad or ugly?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-lat/0610094","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":"sha256:3a10474857f9c3f83d2d3c59e0cbe61ae092627f54a5e90b58dc3c9094fb369b","target":"record","created_at":"2026-05-18T04:23:00Z","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":"2de12c69caa851b3ee3e1c95ca28447693b4d0dcfffb39cb544610676ecb5c8e","cross_cats_sorted":["hep-ph","hep-th"],"license":"","primary_cat":"hep-lat","submitted_at":"2006-10-15T19:56:47Z","title_canon_sha256":"e05759ca3d375b184db8f00bffd6b85e20b2919c861830c4339338ad92fc9663"},"schema_version":"1.0","source":{"id":"hep-lat/0610094","kind":"arxiv","version":1}},"canonical_sha256":"acfdea04c32946d192cbae55ce81e4ecb6638556f8f1611c106e22ff795ccc37","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"acfdea04c32946d192cbae55ce81e4ecb6638556f8f1611c106e22ff795ccc37","first_computed_at":"2026-05-18T04:23:00.148167Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:23:00.148167Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZuKZ8WD0yjK5wCYIieqbj6RcH+LLDGKT1O4hE5IYllBpJgRNb7aVrQb0lpHja1Njd2l5FQII+0NH9XaUyPLmAA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:23:00.148757Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-lat/0610094","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a10474857f9c3f83d2d3c59e0cbe61ae092627f54a5e90b58dc3c9094fb369b","sha256:556e8ab1936398a95d6b731293d464f7daa254bf20661bfbd7bd78a4791409b6"],"state_sha256":"73fba56751f969ec00a9c5dd6e859c79ded8e55d3093ed6cbdf496e84c0c05f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OQlSiGdzikxKp+3I3TBt2yZh1qIFPdzV5oVWqHMM8twzVtNa8hEh8PR+ODH8e2obRaHTgGskB4GodjIIjPn7DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T08:44:05.490078Z","bundle_sha256":"69b769b8a9c567fa234d210a0c6674040176614e8a489fc59b534dda3661f9db"}}