{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:ZQIKTZER7MXXX3Q4YLAWXMZ3RE","short_pith_number":"pith:ZQIKTZER","canonical_record":{"source":{"id":"2304.00161","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-31T22:49:49Z","cross_cats_sorted":["cond-mat.str-el","physics.comp-ph"],"title_canon_sha256":"6cfb306c75b8d1296cf9fb452ed01a4aa99ac153ab3c5b52831b3c87d86da88e","abstract_canon_sha256":"a3005323becfc2ebf3fd9eed25f3bf346b185f5b89f6e387d62e2f3325a1081b"},"schema_version":"1.0"},"canonical_sha256":"cc10a9e491fb2f7bee1cc2c16bb33b890f49e085f51ce54a7ce0dd9f32cf591b","source":{"kind":"arxiv","id":"2304.00161","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.00161","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"arxiv_version","alias_value":"2304.00161v4","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.00161","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"pith_short_12","alias_value":"ZQIKTZER7MXX","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZQIKTZER7MXXX3Q4","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZQIKTZER","created_at":"2026-07-05T10:38:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:ZQIKTZER7MXXX3Q4YLAWXMZ3RE","target":"record","payload":{"canonical_record":{"source":{"id":"2304.00161","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-31T22:49:49Z","cross_cats_sorted":["cond-mat.str-el","physics.comp-ph"],"title_canon_sha256":"6cfb306c75b8d1296cf9fb452ed01a4aa99ac153ab3c5b52831b3c87d86da88e","abstract_canon_sha256":"a3005323becfc2ebf3fd9eed25f3bf346b185f5b89f6e387d62e2f3325a1081b"},"schema_version":"1.0"},"canonical_sha256":"cc10a9e491fb2f7bee1cc2c16bb33b890f49e085f51ce54a7ce0dd9f32cf591b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:38:30.199760Z","signature_b64":"PGg7YBPL4gPfMSnT0v6sd4HDw+zKy2ERZPkKUsqm8PMH4FpyuTekupi3GoVp8DmQt6KOfw3NaHBPlzs8gjRgAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc10a9e491fb2f7bee1cc2c16bb33b890f49e085f51ce54a7ce0dd9f32cf591b","last_reissued_at":"2026-07-05T10:38:30.199243Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:38:30.199243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2304.00161","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":"2026-07-05T10:38:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V/RumHnPdRWGN5cwse0DjXq1VY7RkMORlfudddJPu/L86MovYGZZg9jGtpvgpeaMYV0eSxDoZlqaiouuiuvPDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T02:52:25.714845Z"},"content_sha256":"c1d9989062a0769884c01469dc0d1b2e92e2d66de1e28f9fe213f30d41253aa4","schema_version":"1.0","event_id":"sha256:c1d9989062a0769884c01469dc0d1b2e92e2d66de1e28f9fe213f30d41253aa4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:ZQIKTZER7MXXX3Q4YLAWXMZ3RE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Absence of barren plateaus and scaling of gradients in the energy optimization of isometric tensor network states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","physics.comp-ph"],"primary_cat":"quant-ph","authors_text":"Qiang Miao, Thomas Barthel","submitted_at":"2023-03-31T22:49:49Z","abstract_excerpt":"Vanishing gradients can pose substantial obstacles for high-dimensional optimization problems. Here we consider energy minimization problems for quantum many-body systems with extensive Hamiltonians and finite-range interactions, which can be studied on classical computers or in the form of variational quantum eigensolvers on quantum computers. Barren plateaus correspond to scenarios where the average amplitude of the energy gradient decreases exponentially with increasing system size. This occurs, for example, for quantum neural networks and for brickwall quantum circuits when the depth incre"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.00161","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/2304.00161/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":"2026-07-05T10:38:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RaXvfcTvWSZ74oZuvrxZY0Y0JS8t2JFAk3Yoo7J+hXQxUivzHVvJaKraniOFrAGLCZNcP25kCpoYsq0D14KGAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T02:52:25.715369Z"},"content_sha256":"1afc07b320c804b5b468ccb2eaad5e1313c33d8ce54bc80b662ff8df3c9952cc","schema_version":"1.0","event_id":"sha256:1afc07b320c804b5b468ccb2eaad5e1313c33d8ce54bc80b662ff8df3c9952cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZQIKTZER7MXXX3Q4YLAWXMZ3RE/bundle.json","state_url":"https://pith.science/pith/ZQIKTZER7MXXX3Q4YLAWXMZ3RE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZQIKTZER7MXXX3Q4YLAWXMZ3RE/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":"2026-08-04T02:52:25Z","links":{"resolver":"https://pith.science/pith/ZQIKTZER7MXXX3Q4YLAWXMZ3RE","bundle":"https://pith.science/pith/ZQIKTZER7MXXX3Q4YLAWXMZ3RE/bundle.json","state":"https://pith.science/pith/ZQIKTZER7MXXX3Q4YLAWXMZ3RE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZQIKTZER7MXXX3Q4YLAWXMZ3RE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:ZQIKTZER7MXXX3Q4YLAWXMZ3RE","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":"a3005323becfc2ebf3fd9eed25f3bf346b185f5b89f6e387d62e2f3325a1081b","cross_cats_sorted":["cond-mat.str-el","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-31T22:49:49Z","title_canon_sha256":"6cfb306c75b8d1296cf9fb452ed01a4aa99ac153ab3c5b52831b3c87d86da88e"},"schema_version":"1.0","source":{"id":"2304.00161","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.00161","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"arxiv_version","alias_value":"2304.00161v4","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.00161","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"pith_short_12","alias_value":"ZQIKTZER7MXX","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZQIKTZER7MXXX3Q4","created_at":"2026-07-05T10:38:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZQIKTZER","created_at":"2026-07-05T10:38:30Z"}],"graph_snapshots":[{"event_id":"sha256:1afc07b320c804b5b468ccb2eaad5e1313c33d8ce54bc80b662ff8df3c9952cc","target":"graph","created_at":"2026-07-05T10:38:30Z","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/2304.00161/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Vanishing gradients can pose substantial obstacles for high-dimensional optimization problems. Here we consider energy minimization problems for quantum many-body systems with extensive Hamiltonians and finite-range interactions, which can be studied on classical computers or in the form of variational quantum eigensolvers on quantum computers. Barren plateaus correspond to scenarios where the average amplitude of the energy gradient decreases exponentially with increasing system size. This occurs, for example, for quantum neural networks and for brickwall quantum circuits when the depth incre","authors_text":"Qiang Miao, Thomas Barthel","cross_cats":["cond-mat.str-el","physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-31T22:49:49Z","title":"Absence of barren plateaus and scaling of gradients in the energy optimization of isometric tensor network states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.00161","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:c1d9989062a0769884c01469dc0d1b2e92e2d66de1e28f9fe213f30d41253aa4","target":"record","created_at":"2026-07-05T10:38:30Z","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":"a3005323becfc2ebf3fd9eed25f3bf346b185f5b89f6e387d62e2f3325a1081b","cross_cats_sorted":["cond-mat.str-el","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-31T22:49:49Z","title_canon_sha256":"6cfb306c75b8d1296cf9fb452ed01a4aa99ac153ab3c5b52831b3c87d86da88e"},"schema_version":"1.0","source":{"id":"2304.00161","kind":"arxiv","version":4}},"canonical_sha256":"cc10a9e491fb2f7bee1cc2c16bb33b890f49e085f51ce54a7ce0dd9f32cf591b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc10a9e491fb2f7bee1cc2c16bb33b890f49e085f51ce54a7ce0dd9f32cf591b","first_computed_at":"2026-07-05T10:38:30.199243Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:38:30.199243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PGg7YBPL4gPfMSnT0v6sd4HDw+zKy2ERZPkKUsqm8PMH4FpyuTekupi3GoVp8DmQt6KOfw3NaHBPlzs8gjRgAg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:38:30.199760Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.00161","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c1d9989062a0769884c01469dc0d1b2e92e2d66de1e28f9fe213f30d41253aa4","sha256:1afc07b320c804b5b468ccb2eaad5e1313c33d8ce54bc80b662ff8df3c9952cc"],"state_sha256":"6366bbdfead9174d6af1ef94fc667b6249e6c5af9b1109e705e629048d614540"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YdZWMO3soUp58gCjr0hYmfdAowPkAyiXlntuFB0Q+2eMF95KHDdULJPuUeyOpth/96bHdZTAB6KtyvnBif2WBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T02:52:25.720208Z","bundle_sha256":"fe1a196171947be524743481f737bdb716607ce33b536a62020699211de8edc2"}}