{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:GACYMP52M3IE37REMUVKHLV57B","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":"b1f88774c35489fd2f9f30910f541ebea98a7373c0708448f6626e7b48afb829","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2019-02-08T19:03:49Z","title_canon_sha256":"905addb2deb2d416b18ea8640335af885f82ded7d61247ae0856983e5d862cc5"},"schema_version":"1.0","source":{"id":"1902.03254","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.03254","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"arxiv_version","alias_value":"1902.03254v2","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.03254","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"pith_short_12","alias_value":"GACYMP52M3IE","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"pith_short_16","alias_value":"GACYMP52M3IE37RE","created_at":"2026-07-05T02:09:34Z"},{"alias_kind":"pith_short_8","alias_value":"GACYMP52","created_at":"2026-07-05T02:09:34Z"}],"graph_snapshots":[{"event_id":"sha256:7c009f5905248b3c78783ce31d32350f9ac67d626e7e44e6fa9413b2e5a0fe08","target":"graph","created_at":"2026-07-05T02:09:34Z","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/1902.03254/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We calculate the electric dipole moment of the nucleon induced by the QCD theta term. We use the gradient flow to define the topological charge and use $N_f = 2+1$ flavors of dynamical quarks corresponding to pion masses of $700$, $570$, and $410$ MeV, and perform an extrapolation to the physical point based on chiral perturbation theory. We perform calculations at $3$ different lattice spacings in the range of $0.07~{\\rm fm} < a < 0.11$ fm at a single value of the pion mass, to enable control on discretization effects. We also investigate finite size effects using $2$ different volumes. A nov","authors_text":"Ahmed Yousif, Andrea Shindler, Jack Dragos, Jordy de Vries, Thomas Luu","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2019-02-08T19:03:49Z","title":"Confirming the Existence of the strong CP Problem in Lattice QCD with the Gradient Flow"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.03254","kind":"arxiv","version":2},"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":"sha256:99092c321b5ca40730e79ea5a482adae829d4aa5d21d1cc23dfb1e98c278960d","target":"record","created_at":"2026-07-05T02:09:34Z","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":"b1f88774c35489fd2f9f30910f541ebea98a7373c0708448f6626e7b48afb829","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2019-02-08T19:03:49Z","title_canon_sha256":"905addb2deb2d416b18ea8640335af885f82ded7d61247ae0856983e5d862cc5"},"schema_version":"1.0","source":{"id":"1902.03254","kind":"arxiv","version":2}},"canonical_sha256":"3005863fba66d04dfe24652aa3aebdf86d57cedf25b36562813be4a6c5c23842","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3005863fba66d04dfe24652aa3aebdf86d57cedf25b36562813be4a6c5c23842","first_computed_at":"2026-07-05T02:09:34.247877Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:09:34.247877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0UubGbpa/DBeeRMBdEsA80iVyDRTxvC3gds6ywmSx+Tp6H8ZHIrtxZVJfvR+dHrTF888ghT2epZrkQZOZyywBg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:09:34.248340Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.03254","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99092c321b5ca40730e79ea5a482adae829d4aa5d21d1cc23dfb1e98c278960d","sha256:7c009f5905248b3c78783ce31d32350f9ac67d626e7e44e6fa9413b2e5a0fe08"],"state_sha256":"0476f7db891ff70a14332f4031afa2df20508a3067eff8f181929da4eb3a1ee5"}