{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:JQIELXM4K6DCGQBWV6UCKDLZP5","short_pith_number":"pith:JQIELXM4","canonical_record":{"source":{"id":"1703.03815","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-10T19:00:22Z","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"title_canon_sha256":"bd0317355f1a85b8d55c0cb03d30ab71b0cb62f3713e359120c23f170f2689bf","abstract_canon_sha256":"28fa06105df06a37a719ab426cb427a3efc1fedb2980ebce64a2c623d6244a54"},"schema_version":"1.0"},"canonical_sha256":"4c1045dd9c5786234036afa8250d797f7c15959d715c2d4c13c5c707398ac9ce","source":{"kind":"arxiv","id":"1703.03815","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.03815","created_at":"2026-05-18T00:30:05Z"},{"alias_kind":"arxiv_version","alias_value":"1703.03815v2","created_at":"2026-05-18T00:30:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.03815","created_at":"2026-05-18T00:30:05Z"},{"alias_kind":"pith_short_12","alias_value":"JQIELXM4K6DC","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JQIELXM4K6DCGQBW","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JQIELXM4","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:JQIELXM4K6DCGQBWV6UCKDLZP5","target":"record","payload":{"canonical_record":{"source":{"id":"1703.03815","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-10T19:00:22Z","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"title_canon_sha256":"bd0317355f1a85b8d55c0cb03d30ab71b0cb62f3713e359120c23f170f2689bf","abstract_canon_sha256":"28fa06105df06a37a719ab426cb427a3efc1fedb2980ebce64a2c623d6244a54"},"schema_version":"1.0"},"canonical_sha256":"4c1045dd9c5786234036afa8250d797f7c15959d715c2d4c13c5c707398ac9ce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:30:05.377483Z","signature_b64":"StC9gBSNhMSfr4ETyIWlKSTPioi6CVtRPNXD5FMg3cHuGhXR9wSYdglcJzSHFQkkZscUdHNxfDtrA119IewQAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4c1045dd9c5786234036afa8250d797f7c15959d715c2d4c13c5c707398ac9ce","last_reissued_at":"2026-05-18T00:30:05.376990Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:30:05.376990Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.03815","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:30:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yLGLkgrjrb15sbUlIffA2Oy2lH6r7mOi27xjTQaBhxT1Cb2qUXf3LROTe3Fc/wlRHXnDE4CjB91o+ogxImrjAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:19:07.961051Z"},"content_sha256":"aaf9422227d963b779d64eda2455f1bfdff288b12dd9c96a5aa4f0e0afad623b","schema_version":"1.0","event_id":"sha256:aaf9422227d963b779d64eda2455f1bfdff288b12dd9c96a5aa4f0e0afad623b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:JQIELXM4K6DCGQBWV6UCKDLZP5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fractional quantization of charge and spin in topological quantum pumps","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Pasquale Marra, Roberta Citro","submitted_at":"2017-03-10T19:00:22Z","abstract_excerpt":"Topological quantum pumps are topologically equivalent to the quantum Hall state: In these systems, the charge pumped during each pumping cycle is quantized and coincides with the Chern invariant. However, differently from quantum Hall insulators, quantum pumps can exhibit novel phenomena such as the fractional quantization of the charge transport, as a consequence of their distinctive symmetries in parameter space. Here, we report the analogous fractional quantization of the spin transport in a topological spin pump realized in a one-dimensional lattice via a periodically modulated Zeeman fie"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.03815","kind":"arxiv","version":2},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:30:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I2dzF5qI5E71WAWEE5FoGnrq5EtR0LEO1F1uSH554kwyDWRvGCtLPgsRc+T3AlQCG2iaYIQ5OrKhXH2XCvv2Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:19:07.961730Z"},"content_sha256":"eaf02143e0f8a2ed2756d1b0a677714b060378f690a5bef4afbf0dff60f4a611","schema_version":"1.0","event_id":"sha256:eaf02143e0f8a2ed2756d1b0a677714b060378f690a5bef4afbf0dff60f4a611"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JQIELXM4K6DCGQBWV6UCKDLZP5/bundle.json","state_url":"https://pith.science/pith/JQIELXM4K6DCGQBWV6UCKDLZP5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JQIELXM4K6DCGQBWV6UCKDLZP5/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":"2026-05-25T19:19:07Z","links":{"resolver":"https://pith.science/pith/JQIELXM4K6DCGQBWV6UCKDLZP5","bundle":"https://pith.science/pith/JQIELXM4K6DCGQBWV6UCKDLZP5/bundle.json","state":"https://pith.science/pith/JQIELXM4K6DCGQBWV6UCKDLZP5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JQIELXM4K6DCGQBWV6UCKDLZP5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:JQIELXM4K6DCGQBWV6UCKDLZP5","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":"28fa06105df06a37a719ab426cb427a3efc1fedb2980ebce64a2c623d6244a54","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-10T19:00:22Z","title_canon_sha256":"bd0317355f1a85b8d55c0cb03d30ab71b0cb62f3713e359120c23f170f2689bf"},"schema_version":"1.0","source":{"id":"1703.03815","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.03815","created_at":"2026-05-18T00:30:05Z"},{"alias_kind":"arxiv_version","alias_value":"1703.03815v2","created_at":"2026-05-18T00:30:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.03815","created_at":"2026-05-18T00:30:05Z"},{"alias_kind":"pith_short_12","alias_value":"JQIELXM4K6DC","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JQIELXM4K6DCGQBW","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JQIELXM4","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:eaf02143e0f8a2ed2756d1b0a677714b060378f690a5bef4afbf0dff60f4a611","target":"graph","created_at":"2026-05-18T00:30:05Z","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"},"paper":{"abstract_excerpt":"Topological quantum pumps are topologically equivalent to the quantum Hall state: In these systems, the charge pumped during each pumping cycle is quantized and coincides with the Chern invariant. However, differently from quantum Hall insulators, quantum pumps can exhibit novel phenomena such as the fractional quantization of the charge transport, as a consequence of their distinctive symmetries in parameter space. Here, we report the analogous fractional quantization of the spin transport in a topological spin pump realized in a one-dimensional lattice via a periodically modulated Zeeman fie","authors_text":"Pasquale Marra, Roberta Citro","cross_cats":["cond-mat.mes-hall","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-10T19:00:22Z","title":"Fractional quantization of charge and spin in topological quantum pumps"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.03815","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:aaf9422227d963b779d64eda2455f1bfdff288b12dd9c96a5aa4f0e0afad623b","target":"record","created_at":"2026-05-18T00:30:05Z","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":"28fa06105df06a37a719ab426cb427a3efc1fedb2980ebce64a2c623d6244a54","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-03-10T19:00:22Z","title_canon_sha256":"bd0317355f1a85b8d55c0cb03d30ab71b0cb62f3713e359120c23f170f2689bf"},"schema_version":"1.0","source":{"id":"1703.03815","kind":"arxiv","version":2}},"canonical_sha256":"4c1045dd9c5786234036afa8250d797f7c15959d715c2d4c13c5c707398ac9ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4c1045dd9c5786234036afa8250d797f7c15959d715c2d4c13c5c707398ac9ce","first_computed_at":"2026-05-18T00:30:05.376990Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:05.376990Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"StC9gBSNhMSfr4ETyIWlKSTPioi6CVtRPNXD5FMg3cHuGhXR9wSYdglcJzSHFQkkZscUdHNxfDtrA119IewQAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:05.377483Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.03815","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aaf9422227d963b779d64eda2455f1bfdff288b12dd9c96a5aa4f0e0afad623b","sha256:eaf02143e0f8a2ed2756d1b0a677714b060378f690a5bef4afbf0dff60f4a611"],"state_sha256":"bb48adf110f534f0f0ffd52ffd4daa6e0ba10932d2e9b913ec3525478aecd47d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jLZbTberEXAiJ3A6XTp+30KIi9kUbyohokUzsNYdJnougs5i3M5zQP9M8Z+bXxbHBGIAa0vWynDDmetKQ6u7DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:19:07.965723Z","bundle_sha256":"d88c2db9e6a6bf10a3d3cf5d0d3b4582ce8d2c565f80eb35021ebb91b018df55"}}