{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:XLV37MNDRMZGBOWJKIQQBQP2SA","short_pith_number":"pith:XLV37MND","canonical_record":{"source":{"id":"1508.07477","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-29T16:49:46Z","cross_cats_sorted":[],"title_canon_sha256":"4eb5c1749688296ed257f3aa2d439aa9f2be0f3e03770b288dd2360086642e2e","abstract_canon_sha256":"c9d849b32e44cf2b4f76f94a7f6a7489dbbd6fa755a16e41ade0bc9dd4b4a159"},"schema_version":"1.0"},"canonical_sha256":"baebbfb1a38b3260bac9522100c1fa900c57449ca53a60b31d8ba171dc071e56","source":{"kind":"arxiv","id":"1508.07477","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.07477","created_at":"2026-05-18T00:40:54Z"},{"alias_kind":"arxiv_version","alias_value":"1508.07477v3","created_at":"2026-05-18T00:40:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.07477","created_at":"2026-05-18T00:40:54Z"},{"alias_kind":"pith_short_12","alias_value":"XLV37MNDRMZG","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XLV37MNDRMZGBOWJ","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XLV37MND","created_at":"2026-05-18T12:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:XLV37MNDRMZGBOWJKIQQBQP2SA","target":"record","payload":{"canonical_record":{"source":{"id":"1508.07477","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-29T16:49:46Z","cross_cats_sorted":[],"title_canon_sha256":"4eb5c1749688296ed257f3aa2d439aa9f2be0f3e03770b288dd2360086642e2e","abstract_canon_sha256":"c9d849b32e44cf2b4f76f94a7f6a7489dbbd6fa755a16e41ade0bc9dd4b4a159"},"schema_version":"1.0"},"canonical_sha256":"baebbfb1a38b3260bac9522100c1fa900c57449ca53a60b31d8ba171dc071e56","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:40:54.199373Z","signature_b64":"UyHo2xzxBKOpXusAsGr7W+s6RthuzkVA8ugPFWxa1VJ2MvgagJRE26Rn8xpiQspUNLWy1+J875P3PPfSKkhtDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"baebbfb1a38b3260bac9522100c1fa900c57449ca53a60b31d8ba171dc071e56","last_reissued_at":"2026-05-18T00:40:54.198717Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:40:54.198717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.07477","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:40:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PDcb1gf0qhzn6As6v/HbYZgk+swbbF40jysG55VLQyVoBi/qEMa2eBAEyyBn3P0HKGarafYs816DgHFMMXFDCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T16:43:50.261426Z"},"content_sha256":"476c55d3e2e93c359389f999362afdf3a3a12068164c6961c5870714ea1af4f9","schema_version":"1.0","event_id":"sha256:476c55d3e2e93c359389f999362afdf3a3a12068164c6961c5870714ea1af4f9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:XLV37MNDRMZGBOWJKIQQBQP2SA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entanglement structure of the Hubbard model in momentum space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"G. Ehlers, J. S\\'olyom, \\\"O. Legeza, R. M. Noack","submitted_at":"2015-08-29T16:49:46Z","abstract_excerpt":"We study the properties of the ground states of the one- and two-dimensional Hubbard models at half filling and moderate doping using entanglement-based measures, which we calculate numerically using the momentum-space density matrix renormalization group (DMRG). In particular, we investigate quantities such as the single-site entropy and two-site mutual information of single-particle momentum states as well as the behavior of the bipartite subsystem entropy for partitions in momentum space. The distribution of these quantities in momentum space gives insight into the fundamental nature of the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.07477","kind":"arxiv","version":3},"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":"2026-05-18T00:40:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6q60FSrZR0PUS1Q9Qi1LtqFLDVs6upgVpr/irk8jItkFLp7ZfWb61EKzUepbGgCL/+QoJFw7ofux2l315edHAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T16:43:50.261804Z"},"content_sha256":"bc6fd1a60358985e9472908d36913acfab8d5fedf0a91a50a1e88b292457575f","schema_version":"1.0","event_id":"sha256:bc6fd1a60358985e9472908d36913acfab8d5fedf0a91a50a1e88b292457575f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XLV37MNDRMZGBOWJKIQQBQP2SA/bundle.json","state_url":"https://pith.science/pith/XLV37MNDRMZGBOWJKIQQBQP2SA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XLV37MNDRMZGBOWJKIQQBQP2SA/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":"2026-05-27T16:43:50Z","links":{"resolver":"https://pith.science/pith/XLV37MNDRMZGBOWJKIQQBQP2SA","bundle":"https://pith.science/pith/XLV37MNDRMZGBOWJKIQQBQP2SA/bundle.json","state":"https://pith.science/pith/XLV37MNDRMZGBOWJKIQQBQP2SA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XLV37MNDRMZGBOWJKIQQBQP2SA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:XLV37MNDRMZGBOWJKIQQBQP2SA","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":"c9d849b32e44cf2b4f76f94a7f6a7489dbbd6fa755a16e41ade0bc9dd4b4a159","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-29T16:49:46Z","title_canon_sha256":"4eb5c1749688296ed257f3aa2d439aa9f2be0f3e03770b288dd2360086642e2e"},"schema_version":"1.0","source":{"id":"1508.07477","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.07477","created_at":"2026-05-18T00:40:54Z"},{"alias_kind":"arxiv_version","alias_value":"1508.07477v3","created_at":"2026-05-18T00:40:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.07477","created_at":"2026-05-18T00:40:54Z"},{"alias_kind":"pith_short_12","alias_value":"XLV37MNDRMZG","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XLV37MNDRMZGBOWJ","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XLV37MND","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:bc6fd1a60358985e9472908d36913acfab8d5fedf0a91a50a1e88b292457575f","target":"graph","created_at":"2026-05-18T00:40:54Z","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 study the properties of the ground states of the one- and two-dimensional Hubbard models at half filling and moderate doping using entanglement-based measures, which we calculate numerically using the momentum-space density matrix renormalization group (DMRG). In particular, we investigate quantities such as the single-site entropy and two-site mutual information of single-particle momentum states as well as the behavior of the bipartite subsystem entropy for partitions in momentum space. The distribution of these quantities in momentum space gives insight into the fundamental nature of the","authors_text":"G. Ehlers, J. S\\'olyom, \\\"O. Legeza, R. M. Noack","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-29T16:49:46Z","title":"Entanglement structure of the Hubbard model in momentum space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.07477","kind":"arxiv","version":3},"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":"sha256:476c55d3e2e93c359389f999362afdf3a3a12068164c6961c5870714ea1af4f9","target":"record","created_at":"2026-05-18T00:40:54Z","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":"c9d849b32e44cf2b4f76f94a7f6a7489dbbd6fa755a16e41ade0bc9dd4b4a159","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-29T16:49:46Z","title_canon_sha256":"4eb5c1749688296ed257f3aa2d439aa9f2be0f3e03770b288dd2360086642e2e"},"schema_version":"1.0","source":{"id":"1508.07477","kind":"arxiv","version":3}},"canonical_sha256":"baebbfb1a38b3260bac9522100c1fa900c57449ca53a60b31d8ba171dc071e56","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"baebbfb1a38b3260bac9522100c1fa900c57449ca53a60b31d8ba171dc071e56","first_computed_at":"2026-05-18T00:40:54.198717Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:40:54.198717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UyHo2xzxBKOpXusAsGr7W+s6RthuzkVA8ugPFWxa1VJ2MvgagJRE26Rn8xpiQspUNLWy1+J875P3PPfSKkhtDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:40:54.199373Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.07477","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:476c55d3e2e93c359389f999362afdf3a3a12068164c6961c5870714ea1af4f9","sha256:bc6fd1a60358985e9472908d36913acfab8d5fedf0a91a50a1e88b292457575f"],"state_sha256":"a9be84e2fde115cd8223b94aad63faf38171cf5db0b668591fe5ca17164901b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GEFf45MA67XjMgREeMBs6+i3wzArWubpQfpGjGhJPGBaKt/0aIJr/43wGcThe7VH/xpxscXt7FZIvNnsbev/CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T16:43:50.264624Z","bundle_sha256":"175b8b7b9b413a214803a00b7cc71ae755dae4cc1e851377d1ba6cbd6bb0d246"}}