{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:WAPZTI7VUBRK7XSCKVTRDCYUMJ","short_pith_number":"pith:WAPZTI7V","schema_version":"1.0","canonical_sha256":"b01f99a3f5a062afde425567118b1462755768dda196b5060214fadf435d75bf","source":{"kind":"arxiv","id":"2106.11019","version":3},"attestation_state":"computed","paper":{"title":"The Perturbed Ferromagnetic Chain: A Tuneable Test of Quantum Hardness in the Transverse-Field Ising Model","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Daniel O'Connor, Louis Fry-Bouriaux, Paul Warburton","submitted_at":"2021-06-21T12:22:35Z","abstract_excerpt":"Quantum annealing in the transverse-field Ising model (TFIM) with open-system dynamics is known to use thermally-assisted tunneling to drive computation. However, it is still subject to debate whether quantum systems in the presence of decoherence are more useful than those using classical dynamics to drive computation. We contribute to this debate by introducing the perturbed ferromagnetic chain (PFC), a chain of frustrated sub-systems where the degree of frustration scales inversely with the perturbation introduced by a tunable parameter. This gives us an easily embeddable gadget whereby pro"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2106.11019","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-06-21T12:22:35Z","cross_cats_sorted":[],"title_canon_sha256":"aae4d61e6a2a193af17afc5b2de470f3010b182a87bafc752d465666d2fa9483","abstract_canon_sha256":"a4a26e6cfa2775f8d73082a5d4054b8da7e1c50e1827b19c0b86b4811ff8a624"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:56:02.057498Z","signature_b64":"Uy0nVDHSoxpLufPQfFykM8ATY1qJRqMgqilCtJpi2Zogm+4NOwgQ7xZc1ODWfGJcvWwgB03XcwUQ/VBdgvYdDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b01f99a3f5a062afde425567118b1462755768dda196b5060214fadf435d75bf","last_reissued_at":"2026-07-05T03:56:02.056975Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:56:02.056975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Perturbed Ferromagnetic Chain: A Tuneable Test of Quantum Hardness in the Transverse-Field Ising Model","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Daniel O'Connor, Louis Fry-Bouriaux, Paul Warburton","submitted_at":"2021-06-21T12:22:35Z","abstract_excerpt":"Quantum annealing in the transverse-field Ising model (TFIM) with open-system dynamics is known to use thermally-assisted tunneling to drive computation. However, it is still subject to debate whether quantum systems in the presence of decoherence are more useful than those using classical dynamics to drive computation. We contribute to this debate by introducing the perturbed ferromagnetic chain (PFC), a chain of frustrated sub-systems where the degree of frustration scales inversely with the perturbation introduced by a tunable parameter. This gives us an easily embeddable gadget whereby pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.11019","kind":"arxiv","version":3},"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/2106.11019/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2106.11019","created_at":"2026-07-05T03:56:02.057034+00:00"},{"alias_kind":"arxiv_version","alias_value":"2106.11019v3","created_at":"2026-07-05T03:56:02.057034+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.11019","created_at":"2026-07-05T03:56:02.057034+00:00"},{"alias_kind":"pith_short_12","alias_value":"WAPZTI7VUBRK","created_at":"2026-07-05T03:56:02.057034+00:00"},{"alias_kind":"pith_short_16","alias_value":"WAPZTI7VUBRK7XSC","created_at":"2026-07-05T03:56:02.057034+00:00"},{"alias_kind":"pith_short_8","alias_value":"WAPZTI7V","created_at":"2026-07-05T03:56:02.057034+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/WAPZTI7VUBRK7XSCKVTRDCYUMJ","json":"https://pith.science/pith/WAPZTI7VUBRK7XSCKVTRDCYUMJ.json","graph_json":"https://pith.science/api/pith-number/WAPZTI7VUBRK7XSCKVTRDCYUMJ/graph.json","events_json":"https://pith.science/api/pith-number/WAPZTI7VUBRK7XSCKVTRDCYUMJ/events.json","paper":"https://pith.science/paper/WAPZTI7V"},"agent_actions":{"view_html":"https://pith.science/pith/WAPZTI7VUBRK7XSCKVTRDCYUMJ","download_json":"https://pith.science/pith/WAPZTI7VUBRK7XSCKVTRDCYUMJ.json","view_paper":"https://pith.science/paper/WAPZTI7V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2106.11019&json=true","fetch_graph":"https://pith.science/api/pith-number/WAPZTI7VUBRK7XSCKVTRDCYUMJ/graph.json","fetch_events":"https://pith.science/api/pith-number/WAPZTI7VUBRK7XSCKVTRDCYUMJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WAPZTI7VUBRK7XSCKVTRDCYUMJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WAPZTI7VUBRK7XSCKVTRDCYUMJ/action/storage_attestation","attest_author":"https://pith.science/pith/WAPZTI7VUBRK7XSCKVTRDCYUMJ/action/author_attestation","sign_citation":"https://pith.science/pith/WAPZTI7VUBRK7XSCKVTRDCYUMJ/action/citation_signature","submit_replication":"https://pith.science/pith/WAPZTI7VUBRK7XSCKVTRDCYUMJ/action/replication_record"}},"created_at":"2026-07-05T03:56:02.057034+00:00","updated_at":"2026-07-05T03:56:02.057034+00:00"}