{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:WPJINGS6BK7YYREDMX4DHU6WHY","short_pith_number":"pith:WPJINGS6","canonical_record":{"source":{"id":"2201.07298","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-01-18T20:25:20Z","cross_cats_sorted":[],"title_canon_sha256":"2d933725bf8c4c11a908c1a09db480a3630465c6d075161518fefc4b22ee09a9","abstract_canon_sha256":"7fedbadcf01a455f9c00103c0e8c5d911b8e959237af8d8818286d960796439f"},"schema_version":"1.0"},"canonical_sha256":"b3d2869a5e0abf8c448365f833d3d63e0e281cfe9771b8d08575f7861f01b877","source":{"kind":"arxiv","id":"2201.07298","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.07298","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"arxiv_version","alias_value":"2201.07298v1","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.07298","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"pith_short_12","alias_value":"WPJINGS6BK7Y","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"pith_short_16","alias_value":"WPJINGS6BK7YYRED","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"pith_short_8","alias_value":"WPJINGS6","created_at":"2026-07-05T04:45:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:WPJINGS6BK7YYREDMX4DHU6WHY","target":"record","payload":{"canonical_record":{"source":{"id":"2201.07298","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-01-18T20:25:20Z","cross_cats_sorted":[],"title_canon_sha256":"2d933725bf8c4c11a908c1a09db480a3630465c6d075161518fefc4b22ee09a9","abstract_canon_sha256":"7fedbadcf01a455f9c00103c0e8c5d911b8e959237af8d8818286d960796439f"},"schema_version":"1.0"},"canonical_sha256":"b3d2869a5e0abf8c448365f833d3d63e0e281cfe9771b8d08575f7861f01b877","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:45:15.799495Z","signature_b64":"UHp0RPuzyeOFataXu8kSWNGjAs3JSogHRovRLCa3w4I0OKQhnJ+s97C2DayrkFXLrTDzgJ56I/b4fpcd0ad+AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b3d2869a5e0abf8c448365f833d3d63e0e281cfe9771b8d08575f7861f01b877","last_reissued_at":"2026-07-05T04:45:15.798931Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:45:15.798931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2201.07298","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":"2026-07-05T04:45:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N2xISjXosI2XnVkbaz9oW9M1b6vvWQ9fdffHsXSR2kFfUBJpM9NrSG93WR4ymH1J4vLLKMko2hrHgGoiaXo7Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T02:17:17.892108Z"},"content_sha256":"81716d0987d85a5dbef81ee474c7f1d8bec593b6095404227f5e9e51633d27d8","schema_version":"1.0","event_id":"sha256:81716d0987d85a5dbef81ee474c7f1d8bec593b6095404227f5e9e51633d27d8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:WPJINGS6BK7YYREDMX4DHU6WHY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Angular-momentum projection in coupled-cluster theory: structure of $^{34}$Mg","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A. Tichai, G. Hagen, G. R. Jansen, J. G. Lietz, S. J. Novario, T. Duguet, T. Papenbrock, Z. H. Sun","submitted_at":"2022-01-18T20:25:20Z","abstract_excerpt":"Single-reference coupled-cluster theory is an accurate and affordable computational method for the nuclear many-body problem. For open-shell nuclei, the reference state typically breaks rotational invariance and angular momentum must be restored as a good quantum number. We perform angular-momentum projection after variation and employ the disentangled coupled-cluster formalism and a Hermitian approach. We compare our results with benchmarks for $^8$Be and $^{20}$Ne using a two-nucleon interaction from chiral effective field theory and for $pf$-shell nuclei within the traditional shell model. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.07298","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/2201.07298/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":"2026-07-05T04:45:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rN3m3gzOEpjuaXpVACfim0IRkwKwzN8vzTsjgJiX9fqD1Cftx4hLw+1sVGUQ06plbYi0P5biBUWv/MiRiZC8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T02:17:17.892590Z"},"content_sha256":"de589e6967e59a3feb80bd8653c8a0187dae0543b92bda406abceff76387ea57","schema_version":"1.0","event_id":"sha256:de589e6967e59a3feb80bd8653c8a0187dae0543b92bda406abceff76387ea57"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WPJINGS6BK7YYREDMX4DHU6WHY/bundle.json","state_url":"https://pith.science/pith/WPJINGS6BK7YYREDMX4DHU6WHY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WPJINGS6BK7YYREDMX4DHU6WHY/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":"2026-08-14T02:17:17Z","links":{"resolver":"https://pith.science/pith/WPJINGS6BK7YYREDMX4DHU6WHY","bundle":"https://pith.science/pith/WPJINGS6BK7YYREDMX4DHU6WHY/bundle.json","state":"https://pith.science/pith/WPJINGS6BK7YYREDMX4DHU6WHY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WPJINGS6BK7YYREDMX4DHU6WHY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:WPJINGS6BK7YYREDMX4DHU6WHY","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":"7fedbadcf01a455f9c00103c0e8c5d911b8e959237af8d8818286d960796439f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-01-18T20:25:20Z","title_canon_sha256":"2d933725bf8c4c11a908c1a09db480a3630465c6d075161518fefc4b22ee09a9"},"schema_version":"1.0","source":{"id":"2201.07298","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.07298","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"arxiv_version","alias_value":"2201.07298v1","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.07298","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"pith_short_12","alias_value":"WPJINGS6BK7Y","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"pith_short_16","alias_value":"WPJINGS6BK7YYRED","created_at":"2026-07-05T04:45:15Z"},{"alias_kind":"pith_short_8","alias_value":"WPJINGS6","created_at":"2026-07-05T04:45:15Z"}],"graph_snapshots":[{"event_id":"sha256:de589e6967e59a3feb80bd8653c8a0187dae0543b92bda406abceff76387ea57","target":"graph","created_at":"2026-07-05T04:45:15Z","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/2201.07298/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Single-reference coupled-cluster theory is an accurate and affordable computational method for the nuclear many-body problem. For open-shell nuclei, the reference state typically breaks rotational invariance and angular momentum must be restored as a good quantum number. We perform angular-momentum projection after variation and employ the disentangled coupled-cluster formalism and a Hermitian approach. We compare our results with benchmarks for $^8$Be and $^{20}$Ne using a two-nucleon interaction from chiral effective field theory and for $pf$-shell nuclei within the traditional shell model. ","authors_text":"A. Tichai, G. Hagen, G. R. Jansen, J. G. Lietz, S. J. Novario, T. Duguet, T. Papenbrock, Z. H. Sun","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-01-18T20:25:20Z","title":"Angular-momentum projection in coupled-cluster theory: structure of $^{34}$Mg"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.07298","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":"sha256:81716d0987d85a5dbef81ee474c7f1d8bec593b6095404227f5e9e51633d27d8","target":"record","created_at":"2026-07-05T04:45:15Z","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":"7fedbadcf01a455f9c00103c0e8c5d911b8e959237af8d8818286d960796439f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-01-18T20:25:20Z","title_canon_sha256":"2d933725bf8c4c11a908c1a09db480a3630465c6d075161518fefc4b22ee09a9"},"schema_version":"1.0","source":{"id":"2201.07298","kind":"arxiv","version":1}},"canonical_sha256":"b3d2869a5e0abf8c448365f833d3d63e0e281cfe9771b8d08575f7861f01b877","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3d2869a5e0abf8c448365f833d3d63e0e281cfe9771b8d08575f7861f01b877","first_computed_at":"2026-07-05T04:45:15.798931Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:45:15.798931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UHp0RPuzyeOFataXu8kSWNGjAs3JSogHRovRLCa3w4I0OKQhnJ+s97C2DayrkFXLrTDzgJ56I/b4fpcd0ad+AA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:45:15.799495Z","signed_message":"canonical_sha256_bytes"},"source_id":"2201.07298","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81716d0987d85a5dbef81ee474c7f1d8bec593b6095404227f5e9e51633d27d8","sha256:de589e6967e59a3feb80bd8653c8a0187dae0543b92bda406abceff76387ea57"],"state_sha256":"87731170131a80058ac3cc5c7701fc8993176e4747969e23a1788cde10ab2e8c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/qy06P9tv2cKR0BH3icL7VzC8Py08nSoSp7BCLygA9DqEtLcgPyuxXfNadd9nKIzSEUHz99j/iIvcWqE1ZimCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T02:17:17.896560Z","bundle_sha256":"24a2c82ea7afa9b889813a7319aaa5b481f2d99f5f1e34af9e34cfb435747d3b"}}