{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:WCBAYQVWNTFAOQRXNKHGBXCUM4","short_pith_number":"pith:WCBAYQVW","canonical_record":{"source":{"id":"1901.11338","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-31T13:02:56Z","cross_cats_sorted":[],"title_canon_sha256":"9673659ca470674bf79628f8279be8b0a820aee9bf10bf036ea7537eb0adf543","abstract_canon_sha256":"0580e231f4b4766fa0aa63e0caa5fbf178f345cb172cb41a01241f65951e6033"},"schema_version":"1.0"},"canonical_sha256":"b0820c42b66cca0742376a8e60dc54671138986c16189f27d9b744561c448296","source":{"kind":"arxiv","id":"1901.11338","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.11338","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"arxiv_version","alias_value":"1901.11338v1","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.11338","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"pith_short_12","alias_value":"WCBAYQVWNTFA","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WCBAYQVWNTFAOQRX","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WCBAYQVW","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:WCBAYQVWNTFAOQRXNKHGBXCUM4","target":"record","payload":{"canonical_record":{"source":{"id":"1901.11338","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-31T13:02:56Z","cross_cats_sorted":[],"title_canon_sha256":"9673659ca470674bf79628f8279be8b0a820aee9bf10bf036ea7537eb0adf543","abstract_canon_sha256":"0580e231f4b4766fa0aa63e0caa5fbf178f345cb172cb41a01241f65951e6033"},"schema_version":"1.0"},"canonical_sha256":"b0820c42b66cca0742376a8e60dc54671138986c16189f27d9b744561c448296","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:08.283007Z","signature_b64":"C1T7ciLn5xi4i3iHwJ25BqX4zg7rm0GsPdmAX6qm5U0kutSmXj7mO1sne1P1h4fHFTsAkG+JPExPZe8cEpkIAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b0820c42b66cca0742376a8e60dc54671138986c16189f27d9b744561c448296","last_reissued_at":"2026-05-17T23:50:08.282507Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:08.282507Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.11338","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":"2026-05-17T23:50:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MXUj+PDFzuIroAFAPTaZX13H50HSB8Ijbah0mZRGmGOoG25JgZTDgPcSiZtyrS5ll7Jzo4X98Ws+9C/8CTdPCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T22:58:50.649263Z"},"content_sha256":"6e1849b6f7bf71fdaed2390401d09f918e875a7d4c24abdd0007ae23b0e7ca97","schema_version":"1.0","event_id":"sha256:6e1849b6f7bf71fdaed2390401d09f918e875a7d4c24abdd0007ae23b0e7ca97"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:WCBAYQVWNTFAOQRXNKHGBXCUM4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Variational calculation of nuclear matter in finite particle number approach using unitary correlation operator and high-momentum pair methods","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Chang Xu, Hiroki Takemoto, Hiroshi Toki, Hisashi Horiuchi, Kiyomi Ikeda, Mengjiao Lyu, Niu Wan, Taiichi Yamada, Takayuki Myo","submitted_at":"2019-01-31T13:02:56Z","abstract_excerpt":"We propose a new variational method for describing nuclear matter from nucleon-nucleon interaction. We use the unitary correlation operator method (UCOM) for central correlation to treat the short-range repulsion and further include the two-particle two-hole (2p2h) excitations of nucleon pair involving a large relative momentum, which is called 'high-momentum pair'(HM). We describe nuclear matter in finite size with finite particle number on periodic boundary condition and increase the 2p2h configurations until we get the convergence of the total energy per particle. We demonstrate the validit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.11338","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":"2026-05-17T23:50:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K78zRC8m1gJctdFA+MaKXXrlep2qOt7HVk467ZAhhQRK3/7oysFX2QXhJTumJEt7nKyNrvl/EzLwb3f2QJQJAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T22:58:50.649653Z"},"content_sha256":"499151a3fbfa8c36ec11287b04cd9c48045e316dfc702c9c3b34f781b9df7b13","schema_version":"1.0","event_id":"sha256:499151a3fbfa8c36ec11287b04cd9c48045e316dfc702c9c3b34f781b9df7b13"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WCBAYQVWNTFAOQRXNKHGBXCUM4/bundle.json","state_url":"https://pith.science/pith/WCBAYQVWNTFAOQRXNKHGBXCUM4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WCBAYQVWNTFAOQRXNKHGBXCUM4/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":"2026-06-08T22:58:50Z","links":{"resolver":"https://pith.science/pith/WCBAYQVWNTFAOQRXNKHGBXCUM4","bundle":"https://pith.science/pith/WCBAYQVWNTFAOQRXNKHGBXCUM4/bundle.json","state":"https://pith.science/pith/WCBAYQVWNTFAOQRXNKHGBXCUM4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WCBAYQVWNTFAOQRXNKHGBXCUM4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WCBAYQVWNTFAOQRXNKHGBXCUM4","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":"0580e231f4b4766fa0aa63e0caa5fbf178f345cb172cb41a01241f65951e6033","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-31T13:02:56Z","title_canon_sha256":"9673659ca470674bf79628f8279be8b0a820aee9bf10bf036ea7537eb0adf543"},"schema_version":"1.0","source":{"id":"1901.11338","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.11338","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"arxiv_version","alias_value":"1901.11338v1","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.11338","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"pith_short_12","alias_value":"WCBAYQVWNTFA","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WCBAYQVWNTFAOQRX","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WCBAYQVW","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:499151a3fbfa8c36ec11287b04cd9c48045e316dfc702c9c3b34f781b9df7b13","target":"graph","created_at":"2026-05-17T23:50:08Z","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":"We propose a new variational method for describing nuclear matter from nucleon-nucleon interaction. We use the unitary correlation operator method (UCOM) for central correlation to treat the short-range repulsion and further include the two-particle two-hole (2p2h) excitations of nucleon pair involving a large relative momentum, which is called 'high-momentum pair'(HM). We describe nuclear matter in finite size with finite particle number on periodic boundary condition and increase the 2p2h configurations until we get the convergence of the total energy per particle. We demonstrate the validit","authors_text":"Chang Xu, Hiroki Takemoto, Hiroshi Toki, Hisashi Horiuchi, Kiyomi Ikeda, Mengjiao Lyu, Niu Wan, Taiichi Yamada, Takayuki Myo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-31T13:02:56Z","title":"Variational calculation of nuclear matter in finite particle number approach using unitary correlation operator and high-momentum pair methods"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.11338","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":"sha256:6e1849b6f7bf71fdaed2390401d09f918e875a7d4c24abdd0007ae23b0e7ca97","target":"record","created_at":"2026-05-17T23:50:08Z","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":"0580e231f4b4766fa0aa63e0caa5fbf178f345cb172cb41a01241f65951e6033","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-01-31T13:02:56Z","title_canon_sha256":"9673659ca470674bf79628f8279be8b0a820aee9bf10bf036ea7537eb0adf543"},"schema_version":"1.0","source":{"id":"1901.11338","kind":"arxiv","version":1}},"canonical_sha256":"b0820c42b66cca0742376a8e60dc54671138986c16189f27d9b744561c448296","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b0820c42b66cca0742376a8e60dc54671138986c16189f27d9b744561c448296","first_computed_at":"2026-05-17T23:50:08.282507Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:08.282507Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C1T7ciLn5xi4i3iHwJ25BqX4zg7rm0GsPdmAX6qm5U0kutSmXj7mO1sne1P1h4fHFTsAkG+JPExPZe8cEpkIAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:08.283007Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.11338","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6e1849b6f7bf71fdaed2390401d09f918e875a7d4c24abdd0007ae23b0e7ca97","sha256:499151a3fbfa8c36ec11287b04cd9c48045e316dfc702c9c3b34f781b9df7b13"],"state_sha256":"19491972a389764f5d08b4e80890a0419b570e8a6e409e48734f00dc3fa28175"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N4rDxmQqv4iDRYW2kMFg8bkbOWzq5TfRkCIo68WBNYVefcoJQo+OC6TxgE8sr/UPXoKv+H4FOlOvaWE2Y/K5Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T22:58:50.652035Z","bundle_sha256":"6afa71841175dcbfa753cfaf27e1e5c602e47d0e4fa13b66a921c81deeec14c0"}}