{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:U2CS52IG6ZIJJUZP7AE5FRWUBP","short_pith_number":"pith:U2CS52IG","canonical_record":{"source":{"id":"1806.10931","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-06-28T13:02:07Z","cross_cats_sorted":[],"title_canon_sha256":"79e7b6b1bc62ff2c408a05b5b781a2e30e028a4096dbbcc5dec29a2d8a29402f","abstract_canon_sha256":"4d590864570409c155745c1d7093cfb926a002d3ecb7d1e77e9ce9374a23502a"},"schema_version":"1.0"},"canonical_sha256":"a6852ee906f65094d32ff809d2c6d40bf8f8d35ebb8f6f09a4ebb21ea547d176","source":{"kind":"arxiv","id":"1806.10931","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.10931","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"arxiv_version","alias_value":"1806.10931v1","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.10931","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"pith_short_12","alias_value":"U2CS52IG6ZIJ","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"U2CS52IG6ZIJJUZP","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"U2CS52IG","created_at":"2026-05-18T12:32:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:U2CS52IG6ZIJJUZP7AE5FRWUBP","target":"record","payload":{"canonical_record":{"source":{"id":"1806.10931","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-06-28T13:02:07Z","cross_cats_sorted":[],"title_canon_sha256":"79e7b6b1bc62ff2c408a05b5b781a2e30e028a4096dbbcc5dec29a2d8a29402f","abstract_canon_sha256":"4d590864570409c155745c1d7093cfb926a002d3ecb7d1e77e9ce9374a23502a"},"schema_version":"1.0"},"canonical_sha256":"a6852ee906f65094d32ff809d2c6d40bf8f8d35ebb8f6f09a4ebb21ea547d176","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:04.882637Z","signature_b64":"wRwb2+OeH2eUPWO2MHNxkUZEdHgZpP+TQjJAfzF9AUHY9aSmidn7eiNX6H03b/+mgKm2V+tjzDHwHKTXjc/iDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a6852ee906f65094d32ff809d2c6d40bf8f8d35ebb8f6f09a4ebb21ea547d176","last_reissued_at":"2026-05-18T00:03:04.882160Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:04.882160Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.10931","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":"2026-05-18T00:03:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NsyZtGrcbW/tihwa4in0IHtxTmdIQE6datnfr3Hgmcdx3cirOfd0gmKYq6a4+k2CFmFtZhMMKrXySaLqfxjHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:49:34.246191Z"},"content_sha256":"b06cb329762884488005f6e7f221113cdcce2c65d5c9e66ce806881994fcc895","schema_version":"1.0","event_id":"sha256:b06cb329762884488005f6e7f221113cdcce2c65d5c9e66ce806881994fcc895"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:U2CS52IG6ZIJJUZP7AE5FRWUBP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bogoliubov Many-Body Perturbation Theory for Open-Shell Nuclei","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Alexander Tichai, Heiko Hergert, Pierre Arthuis, Robert Roth, Thomas Duguet, Vittorio Som\\'a","submitted_at":"2018-06-28T13:02:07Z","abstract_excerpt":"A novel Rayleigh-Schr\\\"odinger many-body perturbation theory (MBPT) approach is introduced by making use of a particle-number-breaking Bogoliubov reference state to tackle (near-)degenerate open-shell fermionic systems. By choosing a reference state that solves the Hartree-Fock-Bogoliubov variational problem, the approach reduces to the well-tested M{\\o}ller-Plesset, i.e., Hartree-Fock based, MBPT when applied to closed-shell systems. Due to its algorithmic simplicity, the newly developed framework provides a computationally simple yet accurate alternative to state-of-the-art non-perturbative "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.10931","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":"2026-05-18T00:03:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hdCdnWDudD6YMfbznjUTnzxuVtvKC9rHMh2yv/d2VkjxKlLLo1Lb6ii7hDKNBMKBWvFiv/vpMfdAKc3Q1326Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:49:34.246555Z"},"content_sha256":"c2eff72a9154120725ad757c6ea7dbac14bd4f3e3913ca22e5f2d31131990ee1","schema_version":"1.0","event_id":"sha256:c2eff72a9154120725ad757c6ea7dbac14bd4f3e3913ca22e5f2d31131990ee1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U2CS52IG6ZIJJUZP7AE5FRWUBP/bundle.json","state_url":"https://pith.science/pith/U2CS52IG6ZIJJUZP7AE5FRWUBP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U2CS52IG6ZIJJUZP7AE5FRWUBP/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":"2026-05-28T00:49:34Z","links":{"resolver":"https://pith.science/pith/U2CS52IG6ZIJJUZP7AE5FRWUBP","bundle":"https://pith.science/pith/U2CS52IG6ZIJJUZP7AE5FRWUBP/bundle.json","state":"https://pith.science/pith/U2CS52IG6ZIJJUZP7AE5FRWUBP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U2CS52IG6ZIJJUZP7AE5FRWUBP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:U2CS52IG6ZIJJUZP7AE5FRWUBP","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":"4d590864570409c155745c1d7093cfb926a002d3ecb7d1e77e9ce9374a23502a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-06-28T13:02:07Z","title_canon_sha256":"79e7b6b1bc62ff2c408a05b5b781a2e30e028a4096dbbcc5dec29a2d8a29402f"},"schema_version":"1.0","source":{"id":"1806.10931","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.10931","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"arxiv_version","alias_value":"1806.10931v1","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.10931","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"pith_short_12","alias_value":"U2CS52IG6ZIJ","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"U2CS52IG6ZIJJUZP","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"U2CS52IG","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:c2eff72a9154120725ad757c6ea7dbac14bd4f3e3913ca22e5f2d31131990ee1","target":"graph","created_at":"2026-05-18T00:03:04Z","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 novel Rayleigh-Schr\\\"odinger many-body perturbation theory (MBPT) approach is introduced by making use of a particle-number-breaking Bogoliubov reference state to tackle (near-)degenerate open-shell fermionic systems. By choosing a reference state that solves the Hartree-Fock-Bogoliubov variational problem, the approach reduces to the well-tested M{\\o}ller-Plesset, i.e., Hartree-Fock based, MBPT when applied to closed-shell systems. Due to its algorithmic simplicity, the newly developed framework provides a computationally simple yet accurate alternative to state-of-the-art non-perturbative ","authors_text":"Alexander Tichai, Heiko Hergert, Pierre Arthuis, Robert Roth, Thomas Duguet, Vittorio Som\\'a","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-06-28T13:02:07Z","title":"Bogoliubov Many-Body Perturbation Theory for Open-Shell Nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.10931","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:b06cb329762884488005f6e7f221113cdcce2c65d5c9e66ce806881994fcc895","target":"record","created_at":"2026-05-18T00:03:04Z","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":"4d590864570409c155745c1d7093cfb926a002d3ecb7d1e77e9ce9374a23502a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-06-28T13:02:07Z","title_canon_sha256":"79e7b6b1bc62ff2c408a05b5b781a2e30e028a4096dbbcc5dec29a2d8a29402f"},"schema_version":"1.0","source":{"id":"1806.10931","kind":"arxiv","version":1}},"canonical_sha256":"a6852ee906f65094d32ff809d2c6d40bf8f8d35ebb8f6f09a4ebb21ea547d176","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a6852ee906f65094d32ff809d2c6d40bf8f8d35ebb8f6f09a4ebb21ea547d176","first_computed_at":"2026-05-18T00:03:04.882160Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:04.882160Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wRwb2+OeH2eUPWO2MHNxkUZEdHgZpP+TQjJAfzF9AUHY9aSmidn7eiNX6H03b/+mgKm2V+tjzDHwHKTXjc/iDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:04.882637Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.10931","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b06cb329762884488005f6e7f221113cdcce2c65d5c9e66ce806881994fcc895","sha256:c2eff72a9154120725ad757c6ea7dbac14bd4f3e3913ca22e5f2d31131990ee1"],"state_sha256":"2f3de705840268a48bc0ed460456c9d84b3acc3d36ab3ef6f2bdedc205f688d9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f07PIz0oOr8sOgAEsGTe1bpvOzj3j5UYsYIw1zlPp77pyW5+/+5dMvQue3oKNaYFdGcaFzLnEyoL9hgsliQqDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T00:49:34.248503Z","bundle_sha256":"8d7ef10e0b6ce329dfa86b9bcd1f81344a94edeb35f49dcbd301f70e5dbd2f66"}}