{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:WE2FKXVNIXGPFQXLWGDQNSLGYH","short_pith_number":"pith:WE2FKXVN","schema_version":"1.0","canonical_sha256":"b134555ead45ccf2c2ebb18706c966c1d4e33c80a6ce4e4f206682daee683fbe","source":{"kind":"arxiv","id":"1408.4457","version":3},"attestation_state":"computed","paper":{"title":"Fractional quantization of the topological charge pumping in a one-dimensional superlattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.quant-gas","authors_text":"Carmine Ortix, Pasquale Marra, Roberta Citro","submitted_at":"2014-08-19T20:00:20Z","abstract_excerpt":"A one-dimensional quantum charge pump transfers a quantized charge in each pumping cycle. This quantization is topologically robust being analogous to the quantum Hall effect. The charge transferred in a fraction of the pumping period is instead generally unquantized. We show, however, that with specific symmetries in parameter space the charge transferred at well-defined fractions of the pumping period is quantized as integer fractions of the Chern number. We illustrate this in a one-dimensional Harper-Hofstadter model and show that the fractional quantization of the topological charge pumpin"},"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":"1408.4457","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2014-08-19T20:00:20Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"b1f7d298411e868ce77380254ceabcde3da032298745c2906704ca758cb7787c","abstract_canon_sha256":"b6c871db6d0839928861ad509b59d2957db86a7dee596f6126c316595db7e235"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:34:45.615345Z","signature_b64":"zazUnfax7dNsafR7PN+P5JjXfZROBbmKlW2Bvqf0OUhO69k+Sso2aKxgk/RMt2PkQJepKysTCBcEvsigtUUqBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b134555ead45ccf2c2ebb18706c966c1d4e33c80a6ce4e4f206682daee683fbe","last_reissued_at":"2026-05-18T01:34:45.614776Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:34:45.614776Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Fractional quantization of the topological charge pumping in a one-dimensional superlattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.quant-gas","authors_text":"Carmine Ortix, Pasquale Marra, Roberta Citro","submitted_at":"2014-08-19T20:00:20Z","abstract_excerpt":"A one-dimensional quantum charge pump transfers a quantized charge in each pumping cycle. This quantization is topologically robust being analogous to the quantum Hall effect. The charge transferred in a fraction of the pumping period is instead generally unquantized. We show, however, that with specific symmetries in parameter space the charge transferred at well-defined fractions of the pumping period is quantized as integer fractions of the Chern number. We illustrate this in a one-dimensional Harper-Hofstadter model and show that the fractional quantization of the topological charge pumpin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.4457","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":""},"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":"1408.4457","created_at":"2026-05-18T01:34:45.614878+00:00"},{"alias_kind":"arxiv_version","alias_value":"1408.4457v3","created_at":"2026-05-18T01:34:45.614878+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.4457","created_at":"2026-05-18T01:34:45.614878+00:00"},{"alias_kind":"pith_short_12","alias_value":"WE2FKXVNIXGP","created_at":"2026-05-18T12:28:54.890064+00:00"},{"alias_kind":"pith_short_16","alias_value":"WE2FKXVNIXGPFQXL","created_at":"2026-05-18T12:28:54.890064+00:00"},{"alias_kind":"pith_short_8","alias_value":"WE2FKXVN","created_at":"2026-05-18T12:28:54.890064+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/WE2FKXVNIXGPFQXLWGDQNSLGYH","json":"https://pith.science/pith/WE2FKXVNIXGPFQXLWGDQNSLGYH.json","graph_json":"https://pith.science/api/pith-number/WE2FKXVNIXGPFQXLWGDQNSLGYH/graph.json","events_json":"https://pith.science/api/pith-number/WE2FKXVNIXGPFQXLWGDQNSLGYH/events.json","paper":"https://pith.science/paper/WE2FKXVN"},"agent_actions":{"view_html":"https://pith.science/pith/WE2FKXVNIXGPFQXLWGDQNSLGYH","download_json":"https://pith.science/pith/WE2FKXVNIXGPFQXLWGDQNSLGYH.json","view_paper":"https://pith.science/paper/WE2FKXVN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1408.4457&json=true","fetch_graph":"https://pith.science/api/pith-number/WE2FKXVNIXGPFQXLWGDQNSLGYH/graph.json","fetch_events":"https://pith.science/api/pith-number/WE2FKXVNIXGPFQXLWGDQNSLGYH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WE2FKXVNIXGPFQXLWGDQNSLGYH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WE2FKXVNIXGPFQXLWGDQNSLGYH/action/storage_attestation","attest_author":"https://pith.science/pith/WE2FKXVNIXGPFQXLWGDQNSLGYH/action/author_attestation","sign_citation":"https://pith.science/pith/WE2FKXVNIXGPFQXLWGDQNSLGYH/action/citation_signature","submit_replication":"https://pith.science/pith/WE2FKXVNIXGPFQXLWGDQNSLGYH/action/replication_record"}},"created_at":"2026-05-18T01:34:45.614878+00:00","updated_at":"2026-05-18T01:34:45.614878+00:00"}