{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QQEKZ53RIKOTOAGSLYTTL6LSH2","short_pith_number":"pith:QQEKZ53R","canonical_record":{"source":{"id":"1705.01387","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-05-03T12:41:00Z","cross_cats_sorted":[],"title_canon_sha256":"9dabf299b36b1d263e361fe785b091d298c56af88a088c533314180ed1d8916b","abstract_canon_sha256":"0346ce42f52991a5c3413a97fe44eb1758b7b39c9a6682e9bcfdee53aa1581fe"},"schema_version":"1.0"},"canonical_sha256":"8408acf771429d3700d25e2735f9723eac233bac9578a9c20c87b6db606cb021","source":{"kind":"arxiv","id":"1705.01387","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.01387","created_at":"2026-05-18T00:09:20Z"},{"alias_kind":"arxiv_version","alias_value":"1705.01387v1","created_at":"2026-05-18T00:09:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.01387","created_at":"2026-05-18T00:09:20Z"},{"alias_kind":"pith_short_12","alias_value":"QQEKZ53RIKOT","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QQEKZ53RIKOTOAGS","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QQEKZ53R","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QQEKZ53RIKOTOAGSLYTTL6LSH2","target":"record","payload":{"canonical_record":{"source":{"id":"1705.01387","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-05-03T12:41:00Z","cross_cats_sorted":[],"title_canon_sha256":"9dabf299b36b1d263e361fe785b091d298c56af88a088c533314180ed1d8916b","abstract_canon_sha256":"0346ce42f52991a5c3413a97fe44eb1758b7b39c9a6682e9bcfdee53aa1581fe"},"schema_version":"1.0"},"canonical_sha256":"8408acf771429d3700d25e2735f9723eac233bac9578a9c20c87b6db606cb021","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:20.447962Z","signature_b64":"wz9kqlui7q9ccF/h03mnEQBN4HvFGtaIxvyM/TUZ4G0KsVwgPPGOZkoOYYm1GisocALywjWjStT9MUwC1KBzAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8408acf771429d3700d25e2735f9723eac233bac9578a9c20c87b6db606cb021","last_reissued_at":"2026-05-18T00:09:20.447230Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:20.447230Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.01387","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:09:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l2dqoqRucbGMW3TVZFnJLrncsAVzJYmVEIuBiTudMeOceZEdPXwHyLde56BMWerUdmv5MW3+EUrxHNz6ZNVxDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:11:18.040466Z"},"content_sha256":"46f3c96bb12af8854a8b4f6828b4f09566e675f4d806053b1d0a044dca9d6549","schema_version":"1.0","event_id":"sha256:46f3c96bb12af8854a8b4f6828b4f09566e675f4d806053b1d0a044dca9d6549"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QQEKZ53RIKOTOAGSLYTTL6LSH2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"GPUQT: An efficient linear-scaling quantum transport code fully implemented on graphics processing units","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.comp-ph","authors_text":"Ari Harju, Ville Vierimaa, Zheyong Fan","submitted_at":"2017-05-03T12:41:00Z","abstract_excerpt":"We present GPUQT, a quantum transport code fully implemented on graphics processing units. Using this code, one can obtain intrinsic electronic transport properties of large systems described by a real-space tight-binding Hamiltonian together with one or more types of disorder. The DC Kubo conductivity is represented as a time integral of the velocity auto-correlation or a time derivative of the mean square displacement. Linear scaling (with respect to the total number of orbitals in the system) computation time and memory usage are achieved by using various numerical techniques, including spa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.01387","kind":"arxiv","version":1},"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":"2026-05-18T00:09:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y92QrYItfgDTMOP8rFsjLtk6LQbUzwbmOFIWWwTCEcqI2ut6Ocaw6F8DAGsIYtgGyM7pA6ghGV4ai1uz9rPBDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:11:18.041109Z"},"content_sha256":"6b6f0a6ef255993967dd9d2364c0c812306fd751ca2e4f9f22b169602f8737c3","schema_version":"1.0","event_id":"sha256:6b6f0a6ef255993967dd9d2364c0c812306fd751ca2e4f9f22b169602f8737c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QQEKZ53RIKOTOAGSLYTTL6LSH2/bundle.json","state_url":"https://pith.science/pith/QQEKZ53RIKOTOAGSLYTTL6LSH2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QQEKZ53RIKOTOAGSLYTTL6LSH2/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":"2026-05-25T19:11:18Z","links":{"resolver":"https://pith.science/pith/QQEKZ53RIKOTOAGSLYTTL6LSH2","bundle":"https://pith.science/pith/QQEKZ53RIKOTOAGSLYTTL6LSH2/bundle.json","state":"https://pith.science/pith/QQEKZ53RIKOTOAGSLYTTL6LSH2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QQEKZ53RIKOTOAGSLYTTL6LSH2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QQEKZ53RIKOTOAGSLYTTL6LSH2","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":"0346ce42f52991a5c3413a97fe44eb1758b7b39c9a6682e9bcfdee53aa1581fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-05-03T12:41:00Z","title_canon_sha256":"9dabf299b36b1d263e361fe785b091d298c56af88a088c533314180ed1d8916b"},"schema_version":"1.0","source":{"id":"1705.01387","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.01387","created_at":"2026-05-18T00:09:20Z"},{"alias_kind":"arxiv_version","alias_value":"1705.01387v1","created_at":"2026-05-18T00:09:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.01387","created_at":"2026-05-18T00:09:20Z"},{"alias_kind":"pith_short_12","alias_value":"QQEKZ53RIKOT","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QQEKZ53RIKOTOAGS","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QQEKZ53R","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:6b6f0a6ef255993967dd9d2364c0c812306fd751ca2e4f9f22b169602f8737c3","target":"graph","created_at":"2026-05-18T00:09:20Z","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":"We present GPUQT, a quantum transport code fully implemented on graphics processing units. Using this code, one can obtain intrinsic electronic transport properties of large systems described by a real-space tight-binding Hamiltonian together with one or more types of disorder. The DC Kubo conductivity is represented as a time integral of the velocity auto-correlation or a time derivative of the mean square displacement. Linear scaling (with respect to the total number of orbitals in the system) computation time and memory usage are achieved by using various numerical techniques, including spa","authors_text":"Ari Harju, Ville Vierimaa, Zheyong Fan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-05-03T12:41:00Z","title":"GPUQT: An efficient linear-scaling quantum transport code fully implemented on graphics processing units"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.01387","kind":"arxiv","version":1},"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":"sha256:46f3c96bb12af8854a8b4f6828b4f09566e675f4d806053b1d0a044dca9d6549","target":"record","created_at":"2026-05-18T00:09:20Z","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":"0346ce42f52991a5c3413a97fe44eb1758b7b39c9a6682e9bcfdee53aa1581fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-05-03T12:41:00Z","title_canon_sha256":"9dabf299b36b1d263e361fe785b091d298c56af88a088c533314180ed1d8916b"},"schema_version":"1.0","source":{"id":"1705.01387","kind":"arxiv","version":1}},"canonical_sha256":"8408acf771429d3700d25e2735f9723eac233bac9578a9c20c87b6db606cb021","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8408acf771429d3700d25e2735f9723eac233bac9578a9c20c87b6db606cb021","first_computed_at":"2026-05-18T00:09:20.447230Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:20.447230Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wz9kqlui7q9ccF/h03mnEQBN4HvFGtaIxvyM/TUZ4G0KsVwgPPGOZkoOYYm1GisocALywjWjStT9MUwC1KBzAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:20.447962Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.01387","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:46f3c96bb12af8854a8b4f6828b4f09566e675f4d806053b1d0a044dca9d6549","sha256:6b6f0a6ef255993967dd9d2364c0c812306fd751ca2e4f9f22b169602f8737c3"],"state_sha256":"85968911f044eb1b73f7ef9498816a6925002356ae00d04142a990edb9a42599"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z/non5gvIcMYUmjbnhQZ+Pk2yzRocC1N2kS485ZplCyR7lUdqOYgxl9gRSgPSDAmJfEkJjymdoSSfnmd+3wxAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:11:18.044093Z","bundle_sha256":"42494860e97e84c40783fc42383530dc15f2dced38d01615892debe5e56e205b"}}