{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:2TSYK2HES27RDOZMSKPKZMRRCJ","short_pith_number":"pith:2TSYK2HE","canonical_record":{"source":{"id":"2308.12358","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-08-23T18:03:14Z","cross_cats_sorted":["physics.comp-ph","quant-ph"],"title_canon_sha256":"e45929fc2d4f272b9b79d28e3f62ad74faf53626997b44d9d4a5b5df8867f0cf","abstract_canon_sha256":"82d2855de7ac865bd42674963fd6d2b798ed2d21200ba5af73f39a1cc0823dc7"},"schema_version":"1.0"},"canonical_sha256":"d4e58568e496bf11bb2c929eacb231125d71c3955c23ea8740ae09ad9de67c1c","source":{"kind":"arxiv","id":"2308.12358","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.12358","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"arxiv_version","alias_value":"2308.12358v4","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.12358","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"pith_short_12","alias_value":"2TSYK2HES27R","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"pith_short_16","alias_value":"2TSYK2HES27RDOZM","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"pith_short_8","alias_value":"2TSYK2HE","created_at":"2026-07-05T09:05:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:2TSYK2HES27RDOZMSKPKZMRRCJ","target":"record","payload":{"canonical_record":{"source":{"id":"2308.12358","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-08-23T18:03:14Z","cross_cats_sorted":["physics.comp-ph","quant-ph"],"title_canon_sha256":"e45929fc2d4f272b9b79d28e3f62ad74faf53626997b44d9d4a5b5df8867f0cf","abstract_canon_sha256":"82d2855de7ac865bd42674963fd6d2b798ed2d21200ba5af73f39a1cc0823dc7"},"schema_version":"1.0"},"canonical_sha256":"d4e58568e496bf11bb2c929eacb231125d71c3955c23ea8740ae09ad9de67c1c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:05:10.478798Z","signature_b64":"5A7EudeT6FoeL6YJJWqfcpZ82EVwe5qhOM8Ei/v5A49Y1Lz2rzQnVEXnaYVgcLjJI+jbjxs1VWoOlsxtwC+zDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4e58568e496bf11bb2c929eacb231125d71c3955c23ea8740ae09ad9de67c1c","last_reissued_at":"2026-07-05T09:05:10.478368Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:05:10.478368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.12358","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:05:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w9hQ1bo8QjNRODE8aiKFHRGYlL0uADFHR4yfV7PNVr7ZVrhC7mAlYxYCh+Sh1XNBNODBPUlElcF43ceSSUmaBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T14:47:36.602041Z"},"content_sha256":"86bab14f492641c5e6adde6dc239d2948c9db4f677d1dd29fbe052e34c950d64","schema_version":"1.0","event_id":"sha256:86bab14f492641c5e6adde6dc239d2948c9db4f677d1dd29fbe052e34c950d64"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:2TSYK2HES27RDOZMSKPKZMRRCJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An introduction to infinite projected entangled-pair state methods for variational ground state simulations using automatic differentiation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph","quant-ph"],"primary_cat":"cond-mat.str-el","authors_text":"Erik Lennart Weerda, Jan Naumann, Jens Eisert, Matteo Rizzi, Philipp Schmoll","submitted_at":"2023-08-23T18:03:14Z","abstract_excerpt":"Tensor networks capture large classes of ground states of phases of quantum matter faithfully and efficiently. Their manipulation and contraction has remained a challenge over the years, however. For most of the history, ground state simulations of two-dimensional quantum lattice systems using (infinite) projected entangled pair states have relied on what is called a time-evolving block decimation. In recent years, multiple proposals for the variational optimization of the quantum state have been put forward, overcoming accuracy and convergence problems of previously known methods. The incorpo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.12358","kind":"arxiv","version":4},"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/2308.12358/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":"2026-07-05T09:05:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ej/wSHlQ0DQ+Pt0GJta8BfhdE7W7N/2nyvCBTLInfCPchq2rnt9ouZw18k/mdiZB4tUWBHHHhT9EOAzw5rHoBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T14:47:36.602677Z"},"content_sha256":"fd1fdf10037a1aa3dc1f16f0450ae916cf84e2f15cf0b025b4d44d8ee14a0c47","schema_version":"1.0","event_id":"sha256:fd1fdf10037a1aa3dc1f16f0450ae916cf84e2f15cf0b025b4d44d8ee14a0c47"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2TSYK2HES27RDOZMSKPKZMRRCJ/bundle.json","state_url":"https://pith.science/pith/2TSYK2HES27RDOZMSKPKZMRRCJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2TSYK2HES27RDOZMSKPKZMRRCJ/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":"2026-08-06T14:47:36Z","links":{"resolver":"https://pith.science/pith/2TSYK2HES27RDOZMSKPKZMRRCJ","bundle":"https://pith.science/pith/2TSYK2HES27RDOZMSKPKZMRRCJ/bundle.json","state":"https://pith.science/pith/2TSYK2HES27RDOZMSKPKZMRRCJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2TSYK2HES27RDOZMSKPKZMRRCJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:2TSYK2HES27RDOZMSKPKZMRRCJ","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":"82d2855de7ac865bd42674963fd6d2b798ed2d21200ba5af73f39a1cc0823dc7","cross_cats_sorted":["physics.comp-ph","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-08-23T18:03:14Z","title_canon_sha256":"e45929fc2d4f272b9b79d28e3f62ad74faf53626997b44d9d4a5b5df8867f0cf"},"schema_version":"1.0","source":{"id":"2308.12358","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.12358","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"arxiv_version","alias_value":"2308.12358v4","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.12358","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"pith_short_12","alias_value":"2TSYK2HES27R","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"pith_short_16","alias_value":"2TSYK2HES27RDOZM","created_at":"2026-07-05T09:05:10Z"},{"alias_kind":"pith_short_8","alias_value":"2TSYK2HE","created_at":"2026-07-05T09:05:10Z"}],"graph_snapshots":[{"event_id":"sha256:fd1fdf10037a1aa3dc1f16f0450ae916cf84e2f15cf0b025b4d44d8ee14a0c47","target":"graph","created_at":"2026-07-05T09:05:10Z","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/2308.12358/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Tensor networks capture large classes of ground states of phases of quantum matter faithfully and efficiently. Their manipulation and contraction has remained a challenge over the years, however. For most of the history, ground state simulations of two-dimensional quantum lattice systems using (infinite) projected entangled pair states have relied on what is called a time-evolving block decimation. In recent years, multiple proposals for the variational optimization of the quantum state have been put forward, overcoming accuracy and convergence problems of previously known methods. The incorpo","authors_text":"Erik Lennart Weerda, Jan Naumann, Jens Eisert, Matteo Rizzi, Philipp Schmoll","cross_cats":["physics.comp-ph","quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-08-23T18:03:14Z","title":"An introduction to infinite projected entangled-pair state methods for variational ground state simulations using automatic differentiation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.12358","kind":"arxiv","version":4},"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":"sha256:86bab14f492641c5e6adde6dc239d2948c9db4f677d1dd29fbe052e34c950d64","target":"record","created_at":"2026-07-05T09:05:10Z","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":"82d2855de7ac865bd42674963fd6d2b798ed2d21200ba5af73f39a1cc0823dc7","cross_cats_sorted":["physics.comp-ph","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-08-23T18:03:14Z","title_canon_sha256":"e45929fc2d4f272b9b79d28e3f62ad74faf53626997b44d9d4a5b5df8867f0cf"},"schema_version":"1.0","source":{"id":"2308.12358","kind":"arxiv","version":4}},"canonical_sha256":"d4e58568e496bf11bb2c929eacb231125d71c3955c23ea8740ae09ad9de67c1c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4e58568e496bf11bb2c929eacb231125d71c3955c23ea8740ae09ad9de67c1c","first_computed_at":"2026-07-05T09:05:10.478368Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:05:10.478368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5A7EudeT6FoeL6YJJWqfcpZ82EVwe5qhOM8Ei/v5A49Y1Lz2rzQnVEXnaYVgcLjJI+jbjxs1VWoOlsxtwC+zDA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:05:10.478798Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.12358","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:86bab14f492641c5e6adde6dc239d2948c9db4f677d1dd29fbe052e34c950d64","sha256:fd1fdf10037a1aa3dc1f16f0450ae916cf84e2f15cf0b025b4d44d8ee14a0c47"],"state_sha256":"0312b751f9d68c97370175f5d0592726d9052bbfc4bb3d4ad68024a00a559e5a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mXuz9/h6RPTXeEwdjsU9f+wid3EGQnA6oax5JdoQWf8jQz+Ltqy6+55sdRNKNjlB1iFln5rkPPD+5uF40Tf9Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T14:47:36.609856Z","bundle_sha256":"b458f26f5c19c35d6f40f71cdb6f7cfff3abb1b514fc68614477767a5329678c"}}