{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2QGGDDZXJAEAEGSQQO2GGH2IB2","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":"c22eb94267711ad85815fd081c77cfbfc3a6ad28efd496ab7f8da5ff5cc29108","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-13T13:46:36Z","title_canon_sha256":"5589ad493a7b1b4b8a2f0a0fa6ffb9e38735f844cc34d8b027a86769ff715c2c"},"schema_version":"1.0","source":{"id":"1508.03213","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.03213","created_at":"2026-05-18T01:24:18Z"},{"alias_kind":"arxiv_version","alias_value":"1508.03213v1","created_at":"2026-05-18T01:24:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.03213","created_at":"2026-05-18T01:24:18Z"},{"alias_kind":"pith_short_12","alias_value":"2QGGDDZXJAEA","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2QGGDDZXJAEAEGSQ","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2QGGDDZX","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:302006dcc7b51e989228905bcece86d66c9c43dafd973051a7ab988fb720939f","target":"graph","created_at":"2026-05-18T01:24:18Z","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":"When time-reversal symmetry is weakly broken and interactions are neglected, the surface of a $Z_{2}$ topological insulator supports a half-quantized Hall conductivity $\\sigma_{S} = e^{2}/(2h)$. A surface Hall conductivity in an insulator is equivalent to a bulk magneto-electric polarizability, i.e. to a magnetic field dependent charge polarization. By performing an explicit calculation for the case in which the surface is approximated by a two-dimensional massive Dirac model and time-reversal symmetry is broken by weak ferromagnetism in the bulk, we demonstrate that there is a non-universal i","authors_text":"Allan H. MacDonald, Karin Everschor-Sitte, Matthias Sitte","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-13T13:46:36Z","title":"Interaction Correction to the Magneto-Electric Polarizability of $Z_{2}$ Topological Insulators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.03213","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":"sha256:3745c8cdee8dad9cbfe6834fec3b3d9c127c9d2223966df7c1f48b2c3404c40c","target":"record","created_at":"2026-05-18T01:24:18Z","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":"c22eb94267711ad85815fd081c77cfbfc3a6ad28efd496ab7f8da5ff5cc29108","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-08-13T13:46:36Z","title_canon_sha256":"5589ad493a7b1b4b8a2f0a0fa6ffb9e38735f844cc34d8b027a86769ff715c2c"},"schema_version":"1.0","source":{"id":"1508.03213","kind":"arxiv","version":1}},"canonical_sha256":"d40c618f374808021a5083b4631f480ebdbe50ad10ede0b6a60cbc252aae346a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d40c618f374808021a5083b4631f480ebdbe50ad10ede0b6a60cbc252aae346a","first_computed_at":"2026-05-18T01:24:18.538437Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:24:18.538437Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ywfuh/A0LVTNu3RUCiCKv7OovCpIb87w3DN5PaTo2Ci9DRvdj3q25ahRl9YU4SuxGOEt6uYU/9o/oIAb/8DjCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:24:18.538837Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.03213","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3745c8cdee8dad9cbfe6834fec3b3d9c127c9d2223966df7c1f48b2c3404c40c","sha256:302006dcc7b51e989228905bcece86d66c9c43dafd973051a7ab988fb720939f"],"state_sha256":"7df84c817c39cd9aa8970edc49f265876bbfcc930e19e8dd0a1715420900b9ba"}