{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:FBSYJRT4OEZ7IUJKAAD7RMRVYN","short_pith_number":"pith:FBSYJRT4","canonical_record":{"source":{"id":"2502.00263","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-02-01T01:43:58Z","cross_cats_sorted":[],"title_canon_sha256":"9455815c8897a82f03702ad33ede690976e07c815d7a2888a90887719d2a8bf4","abstract_canon_sha256":"1f597d3077f32b6724ff0b1948f3212bbe8b3b12d7c1faa56581b20b5d3c1e4b"},"schema_version":"1.0"},"canonical_sha256":"286584c67c7133f4512a0007f8b235c36491c0598a89c1072b4515e4c6b0818d","source":{"kind":"arxiv","id":"2502.00263","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.00263","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"arxiv_version","alias_value":"2502.00263v1","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.00263","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"pith_short_12","alias_value":"FBSYJRT4OEZ7","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"pith_short_16","alias_value":"FBSYJRT4OEZ7IUJK","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"pith_short_8","alias_value":"FBSYJRT4","created_at":"2026-07-05T10:08:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:FBSYJRT4OEZ7IUJKAAD7RMRVYN","target":"record","payload":{"canonical_record":{"source":{"id":"2502.00263","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-02-01T01:43:58Z","cross_cats_sorted":[],"title_canon_sha256":"9455815c8897a82f03702ad33ede690976e07c815d7a2888a90887719d2a8bf4","abstract_canon_sha256":"1f597d3077f32b6724ff0b1948f3212bbe8b3b12d7c1faa56581b20b5d3c1e4b"},"schema_version":"1.0"},"canonical_sha256":"286584c67c7133f4512a0007f8b235c36491c0598a89c1072b4515e4c6b0818d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:08:31.441140Z","signature_b64":"t/abfwLPCouyV5nKHBKd9swrTsmQ2TPAP7Gh3PoKVe8Y6Z+ODkf7VAF/SODSQ+2fe1xRIU28N3tA0Z+An7zICw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"286584c67c7133f4512a0007f8b235c36491c0598a89c1072b4515e4c6b0818d","last_reissued_at":"2026-07-05T10:08:31.440734Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:08:31.440734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.00263","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":"2026-07-05T10:08:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AqCNDGtZJ+G3TpQvkLfR5MTP2Yf2wrJ/yjOC83x97oHdJH5SwlCqn+odmxd25o2y4mR7XGQ0Pdlirv95PhoMCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:57:04.812289Z"},"content_sha256":"a0b8e1bfd4227731229413ee5e4480062b00e7169fd056ba2fd5cee41b4784a4","schema_version":"1.0","event_id":"sha256:a0b8e1bfd4227731229413ee5e4480062b00e7169fd056ba2fd5cee41b4784a4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:FBSYJRT4OEZ7IUJKAAD7RMRVYN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Progress in Normalizing Flows for 4d Gauge Theories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"Daniel C. Hackett, Denis Boyda, Fernando Romero-L\\'opez, Gurtej Kanwar, Julian M. Urban, Phiala E. Shanahan, Ryan Abbott","submitted_at":"2025-02-01T01:43:58Z","abstract_excerpt":"Normalizing flows have arisen as a tool to accelerate Monte Carlo sampling for lattice field theories. This work reviews recent progress in applying normalizing flows to 4-dimensional nonabelian gauge theories, focusing on two advancements: an architectural improvement referred to as learned active loops, and the application of correlated ensemble methods to QCD with $N_f=2$ dynamical fermions."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.00263","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2502.00263/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T10:08:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kFumtHJ2fTXAJ9R240XThnZhvyoJz9f1qPb7kXuTxXYUx+olLhbEzETKq2IvpxrWzwmWwAaxgPZEmMbkY7JKDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:57:04.812663Z"},"content_sha256":"7e7c3fe1efbc09bd24b33b44eba5fe2361af94fac718bc7256a0c7704b069ba8","schema_version":"1.0","event_id":"sha256:7e7c3fe1efbc09bd24b33b44eba5fe2361af94fac718bc7256a0c7704b069ba8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FBSYJRT4OEZ7IUJKAAD7RMRVYN/bundle.json","state_url":"https://pith.science/pith/FBSYJRT4OEZ7IUJKAAD7RMRVYN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FBSYJRT4OEZ7IUJKAAD7RMRVYN/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":"2026-07-07T11:57:04Z","links":{"resolver":"https://pith.science/pith/FBSYJRT4OEZ7IUJKAAD7RMRVYN","bundle":"https://pith.science/pith/FBSYJRT4OEZ7IUJKAAD7RMRVYN/bundle.json","state":"https://pith.science/pith/FBSYJRT4OEZ7IUJKAAD7RMRVYN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FBSYJRT4OEZ7IUJKAAD7RMRVYN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:FBSYJRT4OEZ7IUJKAAD7RMRVYN","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":"1f597d3077f32b6724ff0b1948f3212bbe8b3b12d7c1faa56581b20b5d3c1e4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-02-01T01:43:58Z","title_canon_sha256":"9455815c8897a82f03702ad33ede690976e07c815d7a2888a90887719d2a8bf4"},"schema_version":"1.0","source":{"id":"2502.00263","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.00263","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"arxiv_version","alias_value":"2502.00263v1","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.00263","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"pith_short_12","alias_value":"FBSYJRT4OEZ7","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"pith_short_16","alias_value":"FBSYJRT4OEZ7IUJK","created_at":"2026-07-05T10:08:31Z"},{"alias_kind":"pith_short_8","alias_value":"FBSYJRT4","created_at":"2026-07-05T10:08:31Z"}],"graph_snapshots":[{"event_id":"sha256:7e7c3fe1efbc09bd24b33b44eba5fe2361af94fac718bc7256a0c7704b069ba8","target":"graph","created_at":"2026-07-05T10:08:31Z","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/2502.00263/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Normalizing flows have arisen as a tool to accelerate Monte Carlo sampling for lattice field theories. This work reviews recent progress in applying normalizing flows to 4-dimensional nonabelian gauge theories, focusing on two advancements: an architectural improvement referred to as learned active loops, and the application of correlated ensemble methods to QCD with $N_f=2$ dynamical fermions.","authors_text":"Daniel C. Hackett, Denis Boyda, Fernando Romero-L\\'opez, Gurtej Kanwar, Julian M. Urban, Phiala E. Shanahan, Ryan Abbott","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-02-01T01:43:58Z","title":"Progress in Normalizing Flows for 4d Gauge Theories"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.00263","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:a0b8e1bfd4227731229413ee5e4480062b00e7169fd056ba2fd5cee41b4784a4","target":"record","created_at":"2026-07-05T10:08:31Z","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":"1f597d3077f32b6724ff0b1948f3212bbe8b3b12d7c1faa56581b20b5d3c1e4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2025-02-01T01:43:58Z","title_canon_sha256":"9455815c8897a82f03702ad33ede690976e07c815d7a2888a90887719d2a8bf4"},"schema_version":"1.0","source":{"id":"2502.00263","kind":"arxiv","version":1}},"canonical_sha256":"286584c67c7133f4512a0007f8b235c36491c0598a89c1072b4515e4c6b0818d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"286584c67c7133f4512a0007f8b235c36491c0598a89c1072b4515e4c6b0818d","first_computed_at":"2026-07-05T10:08:31.440734Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:08:31.440734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t/abfwLPCouyV5nKHBKd9swrTsmQ2TPAP7Gh3PoKVe8Y6Z+ODkf7VAF/SODSQ+2fe1xRIU28N3tA0Z+An7zICw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:08:31.441140Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.00263","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0b8e1bfd4227731229413ee5e4480062b00e7169fd056ba2fd5cee41b4784a4","sha256:7e7c3fe1efbc09bd24b33b44eba5fe2361af94fac718bc7256a0c7704b069ba8"],"state_sha256":"8148838a57b74c286793f00216897ae52d95217d148aadac0dd574f79653967c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6R3hKhLCZv0qnyfZW1z5EFHRv8jyJDBmi+xxOIbAlf/aMfyrCOLkKYwwgH5zRW+9BP9rsU5kOj9y42hw7nFAAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T11:57:04.814508Z","bundle_sha256":"3d3b7bc5e5ccee057ebdfeaeaa75033b9ab7dd753a9bf1493ddeab535e48dc3f"}}