{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:A4WH7QILJSQURFGC2K4MTYH7CE","short_pith_number":"pith:A4WH7QIL","canonical_record":{"source":{"id":"2502.13454","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-19T06:04:20Z","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"title_canon_sha256":"2b973863c10d90562d00eef1fcd1c4de82e2da1a9001d5a365c6671c4fd814b4","abstract_canon_sha256":"296948c979eef1ce2380223fe48f53677bd0f34504eec308ed65ae5055ce8c42"},"schema_version":"1.0"},"canonical_sha256":"072c7fc10b4ca14894c2d2b8c9e0ff111c8145a87e17435f9289849d53bf3ff5","source":{"kind":"arxiv","id":"2502.13454","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.13454","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"arxiv_version","alias_value":"2502.13454v2","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.13454","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"pith_short_12","alias_value":"A4WH7QILJSQU","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"A4WH7QILJSQURFGC","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"A4WH7QIL","created_at":"2026-07-05T11:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:A4WH7QILJSQURFGC2K4MTYH7CE","target":"record","payload":{"canonical_record":{"source":{"id":"2502.13454","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-19T06:04:20Z","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"title_canon_sha256":"2b973863c10d90562d00eef1fcd1c4de82e2da1a9001d5a365c6671c4fd814b4","abstract_canon_sha256":"296948c979eef1ce2380223fe48f53677bd0f34504eec308ed65ae5055ce8c42"},"schema_version":"1.0"},"canonical_sha256":"072c7fc10b4ca14894c2d2b8c9e0ff111c8145a87e17435f9289849d53bf3ff5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:26:47.997346Z","signature_b64":"PWxw4rbLUXew+Dqvjj3U/8NKbhqpE/xAmOLESwNlyyiBTMjWjPmzQxqZ0a26q+GsmkgnKzKi/X9F2axu4dN3BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"072c7fc10b4ca14894c2d2b8c9e0ff111c8145a87e17435f9289849d53bf3ff5","last_reissued_at":"2026-07-05T11:26:47.996838Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:26:47.996838Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.13454","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:26:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8JOFT12AY4bsC87zqTAWGSg9QUI8JhDuYvW/ItJBl5VpsplOUqWEe5zbNpy78k1BT1SiMryAtlDVf1kpSqXyBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T00:46:06.235284Z"},"content_sha256":"dca01b4fe64fb17cdb69fbf185536f277ecf782472e62ae7c56deb5e628f6d4c","schema_version":"1.0","event_id":"sha256:dca01b4fe64fb17cdb69fbf185536f277ecf782472e62ae7c56deb5e628f6d4c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:A4WH7QILJSQURFGC2K4MTYH7CE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Accurate Simulation of the Hubbard Model with Finite Fermionic Projected Entangled Pair States","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con","quant-ph"],"primary_cat":"cond-mat.str-el","authors_text":"Garnet Kin-Lic Chan, Huanchen Zhai, Ruojing Peng, Wen-Yuan Liu, Zheng-Cheng Gu","submitted_at":"2025-02-19T06:04:20Z","abstract_excerpt":"We demonstrate the use of finite-size fermionic projected entangled pair states, in conjunction with variational Monte Carlo, to perform accurate simulations of the ground-state of the 2D Hubbard model. Using bond dimensions of up to $D=28$, we show that we can surpass state-of-the-art DMRG energies that use up to $m=32000$ SU(2) multiplets on 8-leg ladders. We further apply our methodology to $10\\times 16$, $12\\times 16$ and $16 \\times 16$ lattices at $1/8$ hole doping and observe the dimensional crossover between stripe orientations. Our work shows the power of finite-size fermionic tensor n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.13454","kind":"arxiv","version":2},"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/2502.13454/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":"2026-07-05T11:26:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FUSBrzRuMJRj4qOHH4C1rpRnFCUJESzogQd94KZWnS97TxLFwYxuE2zWjz8c3pCk3XwZRgqhPJ2mykrNDogKDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T00:46:06.236712Z"},"content_sha256":"fde74d23e51940a7ad4e27be07e9aa8d3ca90715318499783fb3e3710ca631c4","schema_version":"1.0","event_id":"sha256:fde74d23e51940a7ad4e27be07e9aa8d3ca90715318499783fb3e3710ca631c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A4WH7QILJSQURFGC2K4MTYH7CE/bundle.json","state_url":"https://pith.science/pith/A4WH7QILJSQURFGC2K4MTYH7CE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A4WH7QILJSQURFGC2K4MTYH7CE/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":"2026-08-07T00:46:06Z","links":{"resolver":"https://pith.science/pith/A4WH7QILJSQURFGC2K4MTYH7CE","bundle":"https://pith.science/pith/A4WH7QILJSQURFGC2K4MTYH7CE/bundle.json","state":"https://pith.science/pith/A4WH7QILJSQURFGC2K4MTYH7CE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A4WH7QILJSQURFGC2K4MTYH7CE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:A4WH7QILJSQURFGC2K4MTYH7CE","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":"296948c979eef1ce2380223fe48f53677bd0f34504eec308ed65ae5055ce8c42","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-19T06:04:20Z","title_canon_sha256":"2b973863c10d90562d00eef1fcd1c4de82e2da1a9001d5a365c6671c4fd814b4"},"schema_version":"1.0","source":{"id":"2502.13454","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.13454","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"arxiv_version","alias_value":"2502.13454v2","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.13454","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"pith_short_12","alias_value":"A4WH7QILJSQU","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"A4WH7QILJSQURFGC","created_at":"2026-07-05T11:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"A4WH7QIL","created_at":"2026-07-05T11:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:fde74d23e51940a7ad4e27be07e9aa8d3ca90715318499783fb3e3710ca631c4","target":"graph","created_at":"2026-07-05T11:26:47Z","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/2502.13454/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate the use of finite-size fermionic projected entangled pair states, in conjunction with variational Monte Carlo, to perform accurate simulations of the ground-state of the 2D Hubbard model. Using bond dimensions of up to $D=28$, we show that we can surpass state-of-the-art DMRG energies that use up to $m=32000$ SU(2) multiplets on 8-leg ladders. We further apply our methodology to $10\\times 16$, $12\\times 16$ and $16 \\times 16$ lattices at $1/8$ hole doping and observe the dimensional crossover between stripe orientations. Our work shows the power of finite-size fermionic tensor n","authors_text":"Garnet Kin-Lic Chan, Huanchen Zhai, Ruojing Peng, Wen-Yuan Liu, Zheng-Cheng Gu","cross_cats":["cond-mat.supr-con","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-19T06:04:20Z","title":"Accurate Simulation of the Hubbard Model with Finite Fermionic Projected Entangled Pair States"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.13454","kind":"arxiv","version":2},"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:dca01b4fe64fb17cdb69fbf185536f277ecf782472e62ae7c56deb5e628f6d4c","target":"record","created_at":"2026-07-05T11:26:47Z","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":"296948c979eef1ce2380223fe48f53677bd0f34504eec308ed65ae5055ce8c42","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-02-19T06:04:20Z","title_canon_sha256":"2b973863c10d90562d00eef1fcd1c4de82e2da1a9001d5a365c6671c4fd814b4"},"schema_version":"1.0","source":{"id":"2502.13454","kind":"arxiv","version":2}},"canonical_sha256":"072c7fc10b4ca14894c2d2b8c9e0ff111c8145a87e17435f9289849d53bf3ff5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"072c7fc10b4ca14894c2d2b8c9e0ff111c8145a87e17435f9289849d53bf3ff5","first_computed_at":"2026-07-05T11:26:47.996838Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:26:47.996838Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PWxw4rbLUXew+Dqvjj3U/8NKbhqpE/xAmOLESwNlyyiBTMjWjPmzQxqZ0a26q+GsmkgnKzKi/X9F2axu4dN3BA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:26:47.997346Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.13454","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dca01b4fe64fb17cdb69fbf185536f277ecf782472e62ae7c56deb5e628f6d4c","sha256:fde74d23e51940a7ad4e27be07e9aa8d3ca90715318499783fb3e3710ca631c4"],"state_sha256":"32025588b7e6da50cfde0ca8c2d748ee05be2ed983c2e09474c0ea25057715c0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I+4js8wQa58nQkCns6xwvDxpsOQKe0rOTxcSjhJTUBt7RZD97r7zAY6zZlzdSOjF0JABXFc6q2ZsPNDi/YEqDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T00:46:06.247509Z","bundle_sha256":"ed1f411aad63da38c5acf547348508cd1a25b79ab9c3a8a6dd4e3aae15874a21"}}