{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:65YRYVPPKIV4SZ6CRXTTKKPCFC","short_pith_number":"pith:65YRYVPP","canonical_record":{"source":{"id":"nucl-th/0406026","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2004-06-09T19:55:21Z","cross_cats_sorted":[],"title_canon_sha256":"692f9751d0f2095460e865e21fdc55ffad6088bd39bd99099722e5130b07250c","abstract_canon_sha256":"6161908a3d1de85102b2051c82ccd911fef59c3834576efbc235566879621c6a"},"schema_version":"1.0"},"canonical_sha256":"f7711c55ef522bc967c28de73529e228a9b8f4bf559f31893cf7e93a1f2eadee","source":{"kind":"arxiv","id":"nucl-th/0406026","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0406026","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0406026v1","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0406026","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"pith_short_12","alias_value":"65YRYVPPKIV4","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"65YRYVPPKIV4SZ6C","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"65YRYVPP","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:65YRYVPPKIV4SZ6CRXTTKKPCFC","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/0406026","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2004-06-09T19:55:21Z","cross_cats_sorted":[],"title_canon_sha256":"692f9751d0f2095460e865e21fdc55ffad6088bd39bd99099722e5130b07250c","abstract_canon_sha256":"6161908a3d1de85102b2051c82ccd911fef59c3834576efbc235566879621c6a"},"schema_version":"1.0"},"canonical_sha256":"f7711c55ef522bc967c28de73529e228a9b8f4bf559f31893cf7e93a1f2eadee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:32.046523Z","signature_b64":"dotB30QybjO9fcPcOnIxo27qoKY8ysxb9WMS2jpiCtN4L4PXDN840rGEoldCb9WDUXUYV/jZP6qjADDDxRveCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7711c55ef522bc967c28de73529e228a9b8f4bf559f31893cf7e93a1f2eadee","last_reissued_at":"2026-05-18T02:35:32.046161Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:32.046161Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/0406026","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":"2026-05-18T02:35:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AAmLVbDqgTVHxzf1C/ANBKto/Qes2vJhgcsunHg8/iTwAWjmtzqZsHoHkVeY10V34lt5zQ1dZrqNbgOmQlrgAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:57:17.948904Z"},"content_sha256":"e82b96a858987f17df7bfcc23f362d1b365e05a28014405eb786826785136d92","schema_version":"1.0","event_id":"sha256:e82b96a858987f17df7bfcc23f362d1b365e05a28014405eb786826785136d92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:65YRYVPPKIV4SZ6CRXTTKKPCFC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Nucleon-Mass Difference in Chiral Perturbation Theory and Nuclear Forces","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"J. L. Friar, M. C. M. Rentmeester, R. G. E. Timmermans, U. van Kolck","submitted_at":"2004-06-09T19:55:21Z","abstract_excerpt":"A new method is developed for treating the effect of the neutron-proton mass difference in isospin-violating nuclear forces. Previous treatments utilized an awkward subtraction scheme to generate these forces. A field redefinition is used to remove that mass difference from the Lagrangian (and hence from asymptotic nucleon states) and replace its effect by effective interactions. Previous calculations of static Class II charge-independence-breaking and Class III charge-symmetry-breaking potentials are verified using the new scheme, which is also used to calculate Class IV nuclear forces. Two-b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0406026","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":"2026-05-18T02:35:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aHic+6Xvl5K5si/55xVnuH7/fWR3RGf0wOseZKg5QsohbY/dEF3BaMKuB/P23EVW5cajrwK5v4nYlNwmufHMBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:57:17.949572Z"},"content_sha256":"ccebb2e979aeee348e84192af11653c5f5f504557cc0b39c6d8e408df393b544","schema_version":"1.0","event_id":"sha256:ccebb2e979aeee348e84192af11653c5f5f504557cc0b39c6d8e408df393b544"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/65YRYVPPKIV4SZ6CRXTTKKPCFC/bundle.json","state_url":"https://pith.science/pith/65YRYVPPKIV4SZ6CRXTTKKPCFC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/65YRYVPPKIV4SZ6CRXTTKKPCFC/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":"2026-05-26T07:57:17Z","links":{"resolver":"https://pith.science/pith/65YRYVPPKIV4SZ6CRXTTKKPCFC","bundle":"https://pith.science/pith/65YRYVPPKIV4SZ6CRXTTKKPCFC/bundle.json","state":"https://pith.science/pith/65YRYVPPKIV4SZ6CRXTTKKPCFC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/65YRYVPPKIV4SZ6CRXTTKKPCFC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:65YRYVPPKIV4SZ6CRXTTKKPCFC","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":"6161908a3d1de85102b2051c82ccd911fef59c3834576efbc235566879621c6a","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2004-06-09T19:55:21Z","title_canon_sha256":"692f9751d0f2095460e865e21fdc55ffad6088bd39bd99099722e5130b07250c"},"schema_version":"1.0","source":{"id":"nucl-th/0406026","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0406026","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0406026v1","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0406026","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"pith_short_12","alias_value":"65YRYVPPKIV4","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"65YRYVPPKIV4SZ6C","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"65YRYVPP","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:ccebb2e979aeee348e84192af11653c5f5f504557cc0b39c6d8e408df393b544","target":"graph","created_at":"2026-05-18T02:35:32Z","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":"A new method is developed for treating the effect of the neutron-proton mass difference in isospin-violating nuclear forces. Previous treatments utilized an awkward subtraction scheme to generate these forces. A field redefinition is used to remove that mass difference from the Lagrangian (and hence from asymptotic nucleon states) and replace its effect by effective interactions. Previous calculations of static Class II charge-independence-breaking and Class III charge-symmetry-breaking potentials are verified using the new scheme, which is also used to calculate Class IV nuclear forces. Two-b","authors_text":"J. L. Friar, M. C. M. Rentmeester, R. G. E. Timmermans, U. van Kolck","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2004-06-09T19:55:21Z","title":"The Nucleon-Mass Difference in Chiral Perturbation Theory and Nuclear Forces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0406026","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:e82b96a858987f17df7bfcc23f362d1b365e05a28014405eb786826785136d92","target":"record","created_at":"2026-05-18T02:35:32Z","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":"6161908a3d1de85102b2051c82ccd911fef59c3834576efbc235566879621c6a","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2004-06-09T19:55:21Z","title_canon_sha256":"692f9751d0f2095460e865e21fdc55ffad6088bd39bd99099722e5130b07250c"},"schema_version":"1.0","source":{"id":"nucl-th/0406026","kind":"arxiv","version":1}},"canonical_sha256":"f7711c55ef522bc967c28de73529e228a9b8f4bf559f31893cf7e93a1f2eadee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7711c55ef522bc967c28de73529e228a9b8f4bf559f31893cf7e93a1f2eadee","first_computed_at":"2026-05-18T02:35:32.046161Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:35:32.046161Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dotB30QybjO9fcPcOnIxo27qoKY8ysxb9WMS2jpiCtN4L4PXDN840rGEoldCb9WDUXUYV/jZP6qjADDDxRveCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:35:32.046523Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/0406026","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e82b96a858987f17df7bfcc23f362d1b365e05a28014405eb786826785136d92","sha256:ccebb2e979aeee348e84192af11653c5f5f504557cc0b39c6d8e408df393b544"],"state_sha256":"a17fd7ac5a5e79861937894ba191ca2d3d02acaedc59e5c0f80f2a6406f0ee81"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CSle7/hJHlnei62szHi23c1Osjl5bgNmk2j0HxZVLACi9/Rd1NL4d5Tli0NfLqso//NoNSkGX6rBnY0MRU8CDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T07:57:17.953043Z","bundle_sha256":"d9aae09b90b7f4af936a3f1ce8ef9dcb8339c2a144e819608c556ef60a09e47e"}}