{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:A4YCWTJX3S2UCYADDNMPUB6AHJ","short_pith_number":"pith:A4YCWTJX","canonical_record":{"source":{"id":"1508.01304","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-06T07:49:18Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"912a66db8b1e5083d741284440d73958015789dee5cdb91ea23d6ce067ec4586","abstract_canon_sha256":"4baa77c532b027425faaaca7fe4989d9a4d26ca4e0eca4fe30cb6e9a817403c4"},"schema_version":"1.0"},"canonical_sha256":"07302b4d37dcb54160031b58fa07c03a692ea6670d6206c26a5b7b417aad72cd","source":{"kind":"arxiv","id":"1508.01304","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01304","created_at":"2026-05-18T01:27:53Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01304v2","created_at":"2026-05-18T01:27:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01304","created_at":"2026-05-18T01:27:53Z"},{"alias_kind":"pith_short_12","alias_value":"A4YCWTJX3S2U","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"A4YCWTJX3S2UCYAD","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"A4YCWTJX","created_at":"2026-05-18T12:29:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:A4YCWTJX3S2UCYADDNMPUB6AHJ","target":"record","payload":{"canonical_record":{"source":{"id":"1508.01304","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-06T07:49:18Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"912a66db8b1e5083d741284440d73958015789dee5cdb91ea23d6ce067ec4586","abstract_canon_sha256":"4baa77c532b027425faaaca7fe4989d9a4d26ca4e0eca4fe30cb6e9a817403c4"},"schema_version":"1.0"},"canonical_sha256":"07302b4d37dcb54160031b58fa07c03a692ea6670d6206c26a5b7b417aad72cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:53.706827Z","signature_b64":"H0u0FPFw52y1VDQs/57ZnGmgAxrBJNyj0DSxkNQC47V8A/eJaqCfzMKXVk+CHq7vsxWkl9Id5YNn2KYeW2cyBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"07302b4d37dcb54160031b58fa07c03a692ea6670d6206c26a5b7b417aad72cd","last_reissued_at":"2026-05-18T01:27:53.703623Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:53.703623Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.01304","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":"2026-05-18T01:27:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wYjATPAfZUsZqhD26PN6NmGXorlIvF8vBh5l2YaMdQgGEPGmEpi+TMmpr5p8MHXy702hLYq1OWZeaYP3FwRuCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T13:37:59.869374Z"},"content_sha256":"d29300b7d3681d80aa1547584b6c2651f7bf37e772b8ca3dd39fd16fe7c7dc92","schema_version":"1.0","event_id":"sha256:d29300b7d3681d80aa1547584b6c2651f7bf37e772b8ca3dd39fd16fe7c7dc92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:A4YCWTJX3S2UCYADDNMPUB6AHJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Finite-temperature charge transport in the one-dimensional Hubbard model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.str-el","authors_text":"F. Heidrich-Meisner, F. Jin, H. De Raedt, K. Michielsen, R. Steinigeweg","submitted_at":"2015-08-06T07:49:18Z","abstract_excerpt":"We study the charge conductivity of the one-dimensional repulsive Hubbard model at finite temperature using the method of dynamical quantum typicality, focusing at half filling. This numerical approach allows us to obtain current autocorrelation functions from systems with as many as 18 sites, way beyond the range of standard exact diagonalization. Our data clearly suggest that the charge Drude weight vanishes with a power law as a function of system size. The low-frequency dependence of the conductivity is consistent with a finite dc value and thus with diffusion, despite large finite-size ef"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01304","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":"2026-05-18T01:27:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dkt/bn4v2d7OlSe3sO5Ts0Wa++AwYMWcifv+6zaZwQsaC6h1XFoZQ31qjSPKp4m1B6KzvQFSqko8Y2FUp8i4Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T13:37:59.869771Z"},"content_sha256":"fe871f348b69ce63f84515d2f49309a41ce7d21cd2d2d600ee2645c95395677d","schema_version":"1.0","event_id":"sha256:fe871f348b69ce63f84515d2f49309a41ce7d21cd2d2d600ee2645c95395677d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A4YCWTJX3S2UCYADDNMPUB6AHJ/bundle.json","state_url":"https://pith.science/pith/A4YCWTJX3S2UCYADDNMPUB6AHJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A4YCWTJX3S2UCYADDNMPUB6AHJ/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":"2026-06-02T13:37:59Z","links":{"resolver":"https://pith.science/pith/A4YCWTJX3S2UCYADDNMPUB6AHJ","bundle":"https://pith.science/pith/A4YCWTJX3S2UCYADDNMPUB6AHJ/bundle.json","state":"https://pith.science/pith/A4YCWTJX3S2UCYADDNMPUB6AHJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A4YCWTJX3S2UCYADDNMPUB6AHJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:A4YCWTJX3S2UCYADDNMPUB6AHJ","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":"4baa77c532b027425faaaca7fe4989d9a4d26ca4e0eca4fe30cb6e9a817403c4","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-06T07:49:18Z","title_canon_sha256":"912a66db8b1e5083d741284440d73958015789dee5cdb91ea23d6ce067ec4586"},"schema_version":"1.0","source":{"id":"1508.01304","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01304","created_at":"2026-05-18T01:27:53Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01304v2","created_at":"2026-05-18T01:27:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01304","created_at":"2026-05-18T01:27:53Z"},{"alias_kind":"pith_short_12","alias_value":"A4YCWTJX3S2U","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"A4YCWTJX3S2UCYAD","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"A4YCWTJX","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:fe871f348b69ce63f84515d2f49309a41ce7d21cd2d2d600ee2645c95395677d","target":"graph","created_at":"2026-05-18T01:27:53Z","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 study the charge conductivity of the one-dimensional repulsive Hubbard model at finite temperature using the method of dynamical quantum typicality, focusing at half filling. This numerical approach allows us to obtain current autocorrelation functions from systems with as many as 18 sites, way beyond the range of standard exact diagonalization. Our data clearly suggest that the charge Drude weight vanishes with a power law as a function of system size. The low-frequency dependence of the conductivity is consistent with a finite dc value and thus with diffusion, despite large finite-size ef","authors_text":"F. Heidrich-Meisner, F. Jin, H. De Raedt, K. Michielsen, R. Steinigeweg","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-06T07:49:18Z","title":"Finite-temperature charge transport in the one-dimensional Hubbard model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01304","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:d29300b7d3681d80aa1547584b6c2651f7bf37e772b8ca3dd39fd16fe7c7dc92","target":"record","created_at":"2026-05-18T01:27:53Z","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":"4baa77c532b027425faaaca7fe4989d9a4d26ca4e0eca4fe30cb6e9a817403c4","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-06T07:49:18Z","title_canon_sha256":"912a66db8b1e5083d741284440d73958015789dee5cdb91ea23d6ce067ec4586"},"schema_version":"1.0","source":{"id":"1508.01304","kind":"arxiv","version":2}},"canonical_sha256":"07302b4d37dcb54160031b58fa07c03a692ea6670d6206c26a5b7b417aad72cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"07302b4d37dcb54160031b58fa07c03a692ea6670d6206c26a5b7b417aad72cd","first_computed_at":"2026-05-18T01:27:53.703623Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:53.703623Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H0u0FPFw52y1VDQs/57ZnGmgAxrBJNyj0DSxkNQC47V8A/eJaqCfzMKXVk+CHq7vsxWkl9Id5YNn2KYeW2cyBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:53.706827Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.01304","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d29300b7d3681d80aa1547584b6c2651f7bf37e772b8ca3dd39fd16fe7c7dc92","sha256:fe871f348b69ce63f84515d2f49309a41ce7d21cd2d2d600ee2645c95395677d"],"state_sha256":"ac688a01bb17d04af911e70389d7e2dab21d5f8261f2150a941c948d219f785d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z58o80RMIkSNhtGYBqACfW4d2nevuYcod/6/c5+tybhxz4sBAZhHsBa8Aj6+YToxl9aQvphKrr+kpMBozhJvBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T13:37:59.871968Z","bundle_sha256":"c79441b9cc4b177155095476ac240e993e3db804af8cab8f162c206b6d360e95"}}