{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:Y7XYQM5R5Q7RIWZSSYVY7CCODF","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":"7689d5e079003e3c7b37ba3e2dfec85e7058a4ad7a9ba4f31ce9ac324827e782","cross_cats_sorted":["cond-mat.mtrl-sci","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-02-14T04:44:11Z","title_canon_sha256":"3f6c1028c84e24295f1f2da0867deb097a1fb56b5093e627807b9924a17ba0b1"},"schema_version":"1.0","source":{"id":"1202.2938","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.2938","created_at":"2026-05-18T01:58:28Z"},{"alias_kind":"arxiv_version","alias_value":"1202.2938v2","created_at":"2026-05-18T01:58:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.2938","created_at":"2026-05-18T01:58:28Z"},{"alias_kind":"pith_short_12","alias_value":"Y7XYQM5R5Q7R","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"Y7XYQM5R5Q7RIWZS","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"Y7XYQM5R","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:65c5f7fb2697711c14cc8d3a4bf2d202fb7ce7154b75dec89be049d369d1b1be","target":"graph","created_at":"2026-05-18T01:58:28Z","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":"It is well known that the low energy electron excitations of the curved graphene sheet $\\Sigma$ are solutions of the massless Dirac equation on a 2+1 dimensional ultra-static metric on ${\\Bbb R} \\times \\Sigma$. An externally applied electric field on the graphene sheet induces a gauge potential which could be mimicked by considering a stationary optical metric of the Zermelo form, which is conformal to the BTZ black hole when the sheet has a constant negative curvature. The Randers form of the metric can model a magnetic field, which is related by a boost to an electric one in the Zermelo fram","authors_text":"G. W. Gibbons, M. Cvetic","cross_cats":["cond-mat.mtrl-sci","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-02-14T04:44:11Z","title":"Graphene and the Zermelo Optical Metric of the BTZ Black Hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.2938","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":"sha256:1544e6d25e30f233b1a0e174678809ec195e85118e88de4935df79fb24f0cd2b","target":"record","created_at":"2026-05-18T01:58:28Z","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":"7689d5e079003e3c7b37ba3e2dfec85e7058a4ad7a9ba4f31ce9ac324827e782","cross_cats_sorted":["cond-mat.mtrl-sci","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-02-14T04:44:11Z","title_canon_sha256":"3f6c1028c84e24295f1f2da0867deb097a1fb56b5093e627807b9924a17ba0b1"},"schema_version":"1.0","source":{"id":"1202.2938","kind":"arxiv","version":2}},"canonical_sha256":"c7ef8833b1ec3f145b32962b8f884e194f4fc9f9116dcfa989cda87d5de9a536","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c7ef8833b1ec3f145b32962b8f884e194f4fc9f9116dcfa989cda87d5de9a536","first_computed_at":"2026-05-18T01:58:28.866594Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:28.866594Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iPCbPxD5wr9kIzWHoB/lK6L5e210hLRTdgKyiKsitIIzLh+CwFwZXhuhFga/0FOcibI0iHdgWc7s3N75wdffBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:28.867201Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.2938","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1544e6d25e30f233b1a0e174678809ec195e85118e88de4935df79fb24f0cd2b","sha256:65c5f7fb2697711c14cc8d3a4bf2d202fb7ce7154b75dec89be049d369d1b1be"],"state_sha256":"24df98f50fd3196bd5d2e59870a593b8f1b54fe016dffd06064d65655a736781"}