{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:KTUIKCJHKX7Q33AXN5AJO3NC6M","short_pith_number":"pith:KTUIKCJH","canonical_record":{"source":{"id":"2204.05322","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-04-11T18:00:01Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"231ec8bde1a215388f4620d95a834c573d8cb9dd9b40f697f4ab7683f0b5da08","abstract_canon_sha256":"5cf0cf59488e2b944a21e5027a47c2f821427ca7099c4fce45b0b0c1d047cf92"},"schema_version":"1.0"},"canonical_sha256":"54e885092755ff0dec176f40976da2f31965803e87a0ffaf802172e3080798be","source":{"kind":"arxiv","id":"2204.05322","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.05322","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"arxiv_version","alias_value":"2204.05322v1","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.05322","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"pith_short_12","alias_value":"KTUIKCJHKX7Q","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"pith_short_16","alias_value":"KTUIKCJHKX7Q33AX","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"pith_short_8","alias_value":"KTUIKCJH","created_at":"2026-07-05T05:15:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:KTUIKCJHKX7Q33AXN5AJO3NC6M","target":"record","payload":{"canonical_record":{"source":{"id":"2204.05322","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-04-11T18:00:01Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"231ec8bde1a215388f4620d95a834c573d8cb9dd9b40f697f4ab7683f0b5da08","abstract_canon_sha256":"5cf0cf59488e2b944a21e5027a47c2f821427ca7099c4fce45b0b0c1d047cf92"},"schema_version":"1.0"},"canonical_sha256":"54e885092755ff0dec176f40976da2f31965803e87a0ffaf802172e3080798be","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:15:38.680526Z","signature_b64":"lcpLgi+4jYilMS8eal4pIYliksvmiVnJ1BfsTZuRHx6WhJNA5Er3pBT702vW4JlvDnSNHcG3tLAtx7hQU4RlAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"54e885092755ff0dec176f40976da2f31965803e87a0ffaf802172e3080798be","last_reissued_at":"2026-07-05T05:15:38.680031Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:15:38.680031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2204.05322","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":"2026-07-05T05:15:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"umr9ngpMXBqWYu9gy96+TFX5tRq0rR+9x3wWHZdN1pS7QhZVXu8xrk7Av21Puak/5nbG9oD5TGC9lnjV8CxkAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:56:59.234847Z"},"content_sha256":"ecba47966a693a669ea2dcd9a6b908b1d1e7cd8ad371abf07b01cc40f577af24","schema_version":"1.0","event_id":"sha256:ecba47966a693a669ea2dcd9a6b908b1d1e7cd8ad371abf07b01cc40f577af24"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:KTUIKCJHKX7Q33AXN5AJO3NC6M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fermionic approach to variational quantum simulation of Kitaev spin models","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"quant-ph","authors_text":"Alexandru Macridin, Ammar Jahin, Andy C. Y. Li, Gabriel N. Perdue, M. Sohaib Alam, Norm M. Tubman, Peter P. Orth, Thomas Iadecola","submitted_at":"2022-04-11T18:00:01Z","abstract_excerpt":"We use the variational quantum eigensolver (VQE) to simulate Kitaev spin models with and without integrability breaking perturbations, focusing in particular on the honeycomb and square-octagon lattices. These models are well known for being exactly solvable in a certain parameter regime via a mapping to free fermions. We use classical simulations to explore a novel variational ansatz that takes advantage of this fermionic representation and is capable of expressing the exact ground state in the solvable limit. We also demonstrate that this ansatz can be extended beyond this limit to provide e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.05322","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2204.05322/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":"2026-07-05T05:15:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kMIn3kCEO1y0DwWFdEuPM5NW+KYGuKSofz7b4EvW9lYqxtQB8evHrTyvorj4mwbEQv0KBI8b0eAeZk4NsWBWCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:56:59.235222Z"},"content_sha256":"a6dc72afe57c1b9acd48d8911e9c4643109c0d1d876d0a6d802b6a3087732865","schema_version":"1.0","event_id":"sha256:a6dc72afe57c1b9acd48d8911e9c4643109c0d1d876d0a6d802b6a3087732865"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KTUIKCJHKX7Q33AXN5AJO3NC6M/bundle.json","state_url":"https://pith.science/pith/KTUIKCJHKX7Q33AXN5AJO3NC6M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KTUIKCJHKX7Q33AXN5AJO3NC6M/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":"2026-07-07T07:56:59Z","links":{"resolver":"https://pith.science/pith/KTUIKCJHKX7Q33AXN5AJO3NC6M","bundle":"https://pith.science/pith/KTUIKCJHKX7Q33AXN5AJO3NC6M/bundle.json","state":"https://pith.science/pith/KTUIKCJHKX7Q33AXN5AJO3NC6M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KTUIKCJHKX7Q33AXN5AJO3NC6M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:KTUIKCJHKX7Q33AXN5AJO3NC6M","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":"5cf0cf59488e2b944a21e5027a47c2f821427ca7099c4fce45b0b0c1d047cf92","cross_cats_sorted":["cond-mat.str-el"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-04-11T18:00:01Z","title_canon_sha256":"231ec8bde1a215388f4620d95a834c573d8cb9dd9b40f697f4ab7683f0b5da08"},"schema_version":"1.0","source":{"id":"2204.05322","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.05322","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"arxiv_version","alias_value":"2204.05322v1","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.05322","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"pith_short_12","alias_value":"KTUIKCJHKX7Q","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"pith_short_16","alias_value":"KTUIKCJHKX7Q33AX","created_at":"2026-07-05T05:15:38Z"},{"alias_kind":"pith_short_8","alias_value":"KTUIKCJH","created_at":"2026-07-05T05:15:38Z"}],"graph_snapshots":[{"event_id":"sha256:a6dc72afe57c1b9acd48d8911e9c4643109c0d1d876d0a6d802b6a3087732865","target":"graph","created_at":"2026-07-05T05:15:38Z","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/2204.05322/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use the variational quantum eigensolver (VQE) to simulate Kitaev spin models with and without integrability breaking perturbations, focusing in particular on the honeycomb and square-octagon lattices. These models are well known for being exactly solvable in a certain parameter regime via a mapping to free fermions. We use classical simulations to explore a novel variational ansatz that takes advantage of this fermionic representation and is capable of expressing the exact ground state in the solvable limit. We also demonstrate that this ansatz can be extended beyond this limit to provide e","authors_text":"Alexandru Macridin, Ammar Jahin, Andy C. Y. Li, Gabriel N. Perdue, M. Sohaib Alam, Norm M. Tubman, Peter P. Orth, Thomas Iadecola","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-04-11T18:00:01Z","title":"Fermionic approach to variational quantum simulation of Kitaev spin models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.05322","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:ecba47966a693a669ea2dcd9a6b908b1d1e7cd8ad371abf07b01cc40f577af24","target":"record","created_at":"2026-07-05T05:15:38Z","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":"5cf0cf59488e2b944a21e5027a47c2f821427ca7099c4fce45b0b0c1d047cf92","cross_cats_sorted":["cond-mat.str-el"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-04-11T18:00:01Z","title_canon_sha256":"231ec8bde1a215388f4620d95a834c573d8cb9dd9b40f697f4ab7683f0b5da08"},"schema_version":"1.0","source":{"id":"2204.05322","kind":"arxiv","version":1}},"canonical_sha256":"54e885092755ff0dec176f40976da2f31965803e87a0ffaf802172e3080798be","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"54e885092755ff0dec176f40976da2f31965803e87a0ffaf802172e3080798be","first_computed_at":"2026-07-05T05:15:38.680031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:15:38.680031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lcpLgi+4jYilMS8eal4pIYliksvmiVnJ1BfsTZuRHx6WhJNA5Er3pBT702vW4JlvDnSNHcG3tLAtx7hQU4RlAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:15:38.680526Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.05322","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ecba47966a693a669ea2dcd9a6b908b1d1e7cd8ad371abf07b01cc40f577af24","sha256:a6dc72afe57c1b9acd48d8911e9c4643109c0d1d876d0a6d802b6a3087732865"],"state_sha256":"1b8161de40b573ce06942cca844ea3f35b44419c92e4224494b3672107988871"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9MwG7WIYa1+9qDcwnpoaVSOgSBdcQfdJZckOWtiGpWVJUG1lx7P8NWitPd+7JUAkNYONJXhEpy+0+LX5bZBIAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:56:59.237257Z","bundle_sha256":"3673bdf520cc80e3148279c017942a79c15e5d0a853c5161011bb00e0a362d22"}}