{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:SNO2E2RNKQFPCBGMS42EKFHR5R","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":"8334a0b4625a56cef4350ce425987680b6cb70e6d907ca6bcb499a1c117d4e8d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-02-16T19:01:26Z","title_canon_sha256":"092cedf72052cec004feedc05261e5844e996798cd629e26f4a53681c25fe5bf"},"schema_version":"1.0","source":{"id":"2302.08529","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.08529","created_at":"2026-07-05T07:41:38Z"},{"alias_kind":"arxiv_version","alias_value":"2302.08529v2","created_at":"2026-07-05T07:41:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.08529","created_at":"2026-07-05T07:41:38Z"},{"alias_kind":"pith_short_12","alias_value":"SNO2E2RNKQFP","created_at":"2026-07-05T07:41:38Z"},{"alias_kind":"pith_short_16","alias_value":"SNO2E2RNKQFPCBGM","created_at":"2026-07-05T07:41:38Z"},{"alias_kind":"pith_short_8","alias_value":"SNO2E2RN","created_at":"2026-07-05T07:41:38Z"}],"graph_snapshots":[{"event_id":"sha256:ce16a56c1ea98caf024f08150c9172a44656eb7b953e899ea1268c01cdc6465a","target":"graph","created_at":"2026-07-05T07:41:38Z","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/2302.08529/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Variational quantum algorithms, which combine highly expressive parameterized quantum circuits (PQCs) and optimization techniques in machine learning, are one of the most promising applications of a near-term quantum computer. Despite their huge potential, the utility of variational quantum algorithms beyond tens of qubits is still questioned. One of the central problems is the trainability of PQCs. The cost function landscape of a randomly initialized PQC is often too flat, asking for an exponential amount of quantum resources to find a solution. This problem, dubbed barren plateaus, has gain","authors_text":"Chae-Yeun Park, Nathan Killoran","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-02-16T19:01:26Z","title":"Hamiltonian variational ansatz without barren plateaus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.08529","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:b28bede5e699ec05c6897dd6c6dd12078ecaa7960ac2a8847e9444a42848fa07","target":"record","created_at":"2026-07-05T07:41:38Z","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":"8334a0b4625a56cef4350ce425987680b6cb70e6d907ca6bcb499a1c117d4e8d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-02-16T19:01:26Z","title_canon_sha256":"092cedf72052cec004feedc05261e5844e996798cd629e26f4a53681c25fe5bf"},"schema_version":"1.0","source":{"id":"2302.08529","kind":"arxiv","version":2}},"canonical_sha256":"935da26a2d540af104cc97344514f1ec597015ca0a9e4c0340dd281fc00cb1a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"935da26a2d540af104cc97344514f1ec597015ca0a9e4c0340dd281fc00cb1a5","first_computed_at":"2026-07-05T07:41:38.544946Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:41:38.544946Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1Squt0ndT9/WhS1zzSU/KouFAwsmdEsy5LWiwKHlmNJJseDD4TK7dvmZHFGKa7bEvIQKmGLHXBjFER4ttaBGCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:41:38.545392Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.08529","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b28bede5e699ec05c6897dd6c6dd12078ecaa7960ac2a8847e9444a42848fa07","sha256:ce16a56c1ea98caf024f08150c9172a44656eb7b953e899ea1268c01cdc6465a"],"state_sha256":"9040d58adb654ca48bb21633d902e11676d238bc9b7cd05acec56bd77920a909"}