{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:RTJANNN4VGUKSSITD7NIMKLGD5","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":"6d473fbf4d1bc3b04cfdb93be3e4177790c55db4faac9199aa48a1911fa4071f","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-11-15T21:02:21Z","title_canon_sha256":"3b3dca2098d94d40516c0f541cc3005429d2c9914bfcaec631a99fcd748e1d3c"},"schema_version":"1.0","source":{"id":"1711.06559","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.06559","created_at":"2026-05-18T00:29:45Z"},{"alias_kind":"arxiv_version","alias_value":"1711.06559v2","created_at":"2026-05-18T00:29:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.06559","created_at":"2026-05-18T00:29:45Z"},{"alias_kind":"pith_short_12","alias_value":"RTJANNN4VGUK","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"RTJANNN4VGUKSSIT","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"RTJANNN4","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:809903a8bac0d16018d21cfef6f0f2086a58b508edecd70d8209c4c9709f533f","target":"graph","created_at":"2026-05-18T00:29:45Z","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 prove that ground states of gapped local Hamiltonians on an infinite spin chain can be efficiently approximated by matrix product states with a bond dimension which scales as D~(L-1)/epsilon, where any local quantity on L consecutive spins is approximated to accuracy epsilon.","authors_text":"Frank Verstraete, Norbert Schuch","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-11-15T21:02:21Z","title":"Matrix product state approximations for infinite systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.06559","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":"sha256:9ec3fff78dc6e108ee1e69f415b2458046077c01a8ac49f79d031074ddece5d8","target":"record","created_at":"2026-05-18T00:29:45Z","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":"6d473fbf4d1bc3b04cfdb93be3e4177790c55db4faac9199aa48a1911fa4071f","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-11-15T21:02:21Z","title_canon_sha256":"3b3dca2098d94d40516c0f541cc3005429d2c9914bfcaec631a99fcd748e1d3c"},"schema_version":"1.0","source":{"id":"1711.06559","kind":"arxiv","version":2}},"canonical_sha256":"8cd206b5bca9a8a949131fda8629661f4db156e9ee4cb0ef9153bd67c6b2e106","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8cd206b5bca9a8a949131fda8629661f4db156e9ee4cb0ef9153bd67c6b2e106","first_computed_at":"2026-05-18T00:29:45.191375Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:29:45.191375Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sIAuEM+4YQf/1uKYMENIj1APxUo0CuTTY00MbbY5k/Jytnor0MH7u2zTmodhvjTH042599UK9e0Qq6kXJPzRCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:29:45.191974Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.06559","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ec3fff78dc6e108ee1e69f415b2458046077c01a8ac49f79d031074ddece5d8","sha256:809903a8bac0d16018d21cfef6f0f2086a58b508edecd70d8209c4c9709f533f"],"state_sha256":"f277b07482af9bf474a29b5d8edd3b1fb146c2760bf69b2219249b711e438340"}