{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:XMQACIPLNJXUUZCQ3JU44HTO4K","short_pith_number":"pith:XMQACIPL","canonical_record":{"source":{"id":"nucl-th/0202048","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2002-02-15T15:08:05Z","cross_cats_sorted":[],"title_canon_sha256":"200bc458b08f49e7e0f1dbd4f46ad55ff98bb25e453f10ae0830626cfee574c1","abstract_canon_sha256":"689fa43fe1298b56e855e9395bdd0a6c54a9ec2b13f61a2f5f8e60123713a293"},"schema_version":"1.0"},"canonical_sha256":"bb200121eb6a6f4a6450da69ce1e6ee2ab3e3934603a2de4f1c42866778b2d75","source":{"kind":"arxiv","id":"nucl-th/0202048","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0202048","created_at":"2026-05-18T04:22:11Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0202048v1","created_at":"2026-05-18T04:22:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0202048","created_at":"2026-05-18T04:22:11Z"},{"alias_kind":"pith_short_12","alias_value":"XMQACIPLNJXU","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"XMQACIPLNJXUUZCQ","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"XMQACIPL","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:XMQACIPLNJXUUZCQ3JU44HTO4K","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/0202048","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2002-02-15T15:08:05Z","cross_cats_sorted":[],"title_canon_sha256":"200bc458b08f49e7e0f1dbd4f46ad55ff98bb25e453f10ae0830626cfee574c1","abstract_canon_sha256":"689fa43fe1298b56e855e9395bdd0a6c54a9ec2b13f61a2f5f8e60123713a293"},"schema_version":"1.0"},"canonical_sha256":"bb200121eb6a6f4a6450da69ce1e6ee2ab3e3934603a2de4f1c42866778b2d75","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:22:11.751790Z","signature_b64":"vYl6lL5dW1hDF8FJeZXvM4FXXuGTsSA6+XjHtQOlTrGsqWPLuIOEGgpwKh6DLtr5EZ42jwlZDbWvh088qcI1Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bb200121eb6a6f4a6450da69ce1e6ee2ab3e3934603a2de4f1c42866778b2d75","last_reissued_at":"2026-05-18T04:22:11.751440Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:22:11.751440Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/0202048","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":"2026-05-18T04:22:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"od8kJO6ScbGvhXOmMbzHkstqKxc7wQze3Yio7Tg3pTLdceN3rEF3rocKRAY0BJDRSOFGPjMyvHHfUc8e8/IYBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T18:59:41.051894Z"},"content_sha256":"b04fa4d2daf3b9305d85a7edb5d0d4c9a62b855bb31793f147c2a5d856fb3fef","schema_version":"1.0","event_id":"sha256:b04fa4d2daf3b9305d85a7edb5d0d4c9a62b855bb31793f147c2a5d856fb3fef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:XMQACIPLNJXUUZCQ3JU44HTO4K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Density Matrix Renormalization Group Method and Large-Scale Nuclear Shell-Model Calculations","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"J. Dukelsky, M.V. Stoitsov, S. Pittel, S.S. Dimitrova","submitted_at":"2002-02-15T15:08:05Z","abstract_excerpt":"The particle-hole Density Matrix Renormalization Group (p-h DMRG) method is discussed as a possible new approach to large-scale nuclear shell-model calculations. Following a general description of the method, we apply it to a class of problems involving many identical nucleons constrained to move in a single large j-shell and to interact via a pairing plus quadrupole interaction. A single-particle term that splits the shell into degenerate doublets is included so as to accommodate the physics of a Fermi surface in the problem. We apply the p-h DMRG method to this test problem for two $j$ value"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0202048","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":"2026-05-18T04:22:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dEu7aaZQeYm0KwCS5pm46eOCu1e3YA/fmmWuOpHpRQsqvNfgxMMcpUTB1Uxwl9//MhCgS8+iTOGVUMvbQJUgAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T18:59:41.052533Z"},"content_sha256":"ed5279ba81d06de816c849a07e2bcb83b4220990b8789875d55c86e16b120eef","schema_version":"1.0","event_id":"sha256:ed5279ba81d06de816c849a07e2bcb83b4220990b8789875d55c86e16b120eef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XMQACIPLNJXUUZCQ3JU44HTO4K/bundle.json","state_url":"https://pith.science/pith/XMQACIPLNJXUUZCQ3JU44HTO4K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XMQACIPLNJXUUZCQ3JU44HTO4K/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":"2026-06-06T18:59:41Z","links":{"resolver":"https://pith.science/pith/XMQACIPLNJXUUZCQ3JU44HTO4K","bundle":"https://pith.science/pith/XMQACIPLNJXUUZCQ3JU44HTO4K/bundle.json","state":"https://pith.science/pith/XMQACIPLNJXUUZCQ3JU44HTO4K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XMQACIPLNJXUUZCQ3JU44HTO4K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:XMQACIPLNJXUUZCQ3JU44HTO4K","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":"689fa43fe1298b56e855e9395bdd0a6c54a9ec2b13f61a2f5f8e60123713a293","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2002-02-15T15:08:05Z","title_canon_sha256":"200bc458b08f49e7e0f1dbd4f46ad55ff98bb25e453f10ae0830626cfee574c1"},"schema_version":"1.0","source":{"id":"nucl-th/0202048","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0202048","created_at":"2026-05-18T04:22:11Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0202048v1","created_at":"2026-05-18T04:22:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0202048","created_at":"2026-05-18T04:22:11Z"},{"alias_kind":"pith_short_12","alias_value":"XMQACIPLNJXU","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"XMQACIPLNJXUUZCQ","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"XMQACIPL","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:ed5279ba81d06de816c849a07e2bcb83b4220990b8789875d55c86e16b120eef","target":"graph","created_at":"2026-05-18T04:22:11Z","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":"The particle-hole Density Matrix Renormalization Group (p-h DMRG) method is discussed as a possible new approach to large-scale nuclear shell-model calculations. Following a general description of the method, we apply it to a class of problems involving many identical nucleons constrained to move in a single large j-shell and to interact via a pairing plus quadrupole interaction. A single-particle term that splits the shell into degenerate doublets is included so as to accommodate the physics of a Fermi surface in the problem. We apply the p-h DMRG method to this test problem for two $j$ value","authors_text":"J. Dukelsky, M.V. Stoitsov, S. Pittel, S.S. Dimitrova","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2002-02-15T15:08:05Z","title":"The Density Matrix Renormalization Group Method and Large-Scale Nuclear Shell-Model Calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0202048","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:b04fa4d2daf3b9305d85a7edb5d0d4c9a62b855bb31793f147c2a5d856fb3fef","target":"record","created_at":"2026-05-18T04:22:11Z","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":"689fa43fe1298b56e855e9395bdd0a6c54a9ec2b13f61a2f5f8e60123713a293","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2002-02-15T15:08:05Z","title_canon_sha256":"200bc458b08f49e7e0f1dbd4f46ad55ff98bb25e453f10ae0830626cfee574c1"},"schema_version":"1.0","source":{"id":"nucl-th/0202048","kind":"arxiv","version":1}},"canonical_sha256":"bb200121eb6a6f4a6450da69ce1e6ee2ab3e3934603a2de4f1c42866778b2d75","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb200121eb6a6f4a6450da69ce1e6ee2ab3e3934603a2de4f1c42866778b2d75","first_computed_at":"2026-05-18T04:22:11.751440Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:22:11.751440Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vYl6lL5dW1hDF8FJeZXvM4FXXuGTsSA6+XjHtQOlTrGsqWPLuIOEGgpwKh6DLtr5EZ42jwlZDbWvh088qcI1Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:22:11.751790Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/0202048","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b04fa4d2daf3b9305d85a7edb5d0d4c9a62b855bb31793f147c2a5d856fb3fef","sha256:ed5279ba81d06de816c849a07e2bcb83b4220990b8789875d55c86e16b120eef"],"state_sha256":"9d9f3769041b81910a6f9df7eb55ece257eac3bf9985ab75811be664734ec124"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rDkgp+misxhU6PmSPgVa+JgXmco+k74Ws8YFR1nYvhDKpybonYMOMFLzO3pze3ndRKXJNfYX9BBHf0P+E8iDBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T18:59:41.058814Z","bundle_sha256":"f7be2e72c60f3cfbcae0859fa8c32dc0d00ad12a3a86e6ada5057c051cd6ae9e"}}