{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:JXBUFLT76TGUGSIFI3RCUCBLXO","short_pith_number":"pith:JXBUFLT7","schema_version":"1.0","canonical_sha256":"4dc342ae7ff4cd43490546e22a082bbb874e5d07e5449393ae569dc61e36ac87","source":{"kind":"arxiv","id":"1908.02796","version":1},"attestation_state":"computed","paper":{"title":"Signatures of merging Dirac points in optics and transport","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"E.J. Nicol, J.P. Carbotte","submitted_at":"2019-08-07T18:54:41Z","abstract_excerpt":"We consider the optical and transport properties in a model two-dimensional Hamiltonian which describes the merging of two Dirac points. At low energy, in the presence of an energy gap parameter $\\Delta$, there are two distinct Dirac points with linear dispersion, these are connected by a saddle point at higher energy. As $\\Delta$ goes to zero, the two Dirac points merge and the resulting dispersion exhibits semi-Dirac behaviour which is quadratic in the $x$-direction (\"nonrelativistic\") and linear the $y$-direction (\"relativistic\").In the clean limit for each direction ($x,y$) the contributio"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1908.02796","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-08-07T18:54:41Z","cross_cats_sorted":[],"title_canon_sha256":"564a224c29b235cfe0ed4bc7096e99b495ea5d703b3af5813e93249898ac7978","abstract_canon_sha256":"9123cd4ee67b09684507bdd8266cd045d6347e4adb2f7eb58fde2f0dd145ab69"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:52:23.338304Z","signature_b64":"hf4vVM+J6wM9SVWXB+9Hn7vz14tgoDY+v/OH2e2uGalC3PDK1vaiLCJGsifVUFQz7G0cplIKAKPNc0gWskW/Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4dc342ae7ff4cd43490546e22a082bbb874e5d07e5449393ae569dc61e36ac87","last_reissued_at":"2026-07-04T23:52:23.337888Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:52:23.337888Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Signatures of merging Dirac points in optics and transport","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"E.J. Nicol, J.P. Carbotte","submitted_at":"2019-08-07T18:54:41Z","abstract_excerpt":"We consider the optical and transport properties in a model two-dimensional Hamiltonian which describes the merging of two Dirac points. At low energy, in the presence of an energy gap parameter $\\Delta$, there are two distinct Dirac points with linear dispersion, these are connected by a saddle point at higher energy. As $\\Delta$ goes to zero, the two Dirac points merge and the resulting dispersion exhibits semi-Dirac behaviour which is quadratic in the $x$-direction (\"nonrelativistic\") and linear the $y$-direction (\"relativistic\").In the clean limit for each direction ($x,y$) the contributio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.02796","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.02796/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1908.02796","created_at":"2026-07-04T23:52:23.337943+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.02796v1","created_at":"2026-07-04T23:52:23.337943+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.02796","created_at":"2026-07-04T23:52:23.337943+00:00"},{"alias_kind":"pith_short_12","alias_value":"JXBUFLT76TGU","created_at":"2026-07-04T23:52:23.337943+00:00"},{"alias_kind":"pith_short_16","alias_value":"JXBUFLT76TGUGSIF","created_at":"2026-07-04T23:52:23.337943+00:00"},{"alias_kind":"pith_short_8","alias_value":"JXBUFLT7","created_at":"2026-07-04T23:52:23.337943+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JXBUFLT76TGUGSIFI3RCUCBLXO","json":"https://pith.science/pith/JXBUFLT76TGUGSIFI3RCUCBLXO.json","graph_json":"https://pith.science/api/pith-number/JXBUFLT76TGUGSIFI3RCUCBLXO/graph.json","events_json":"https://pith.science/api/pith-number/JXBUFLT76TGUGSIFI3RCUCBLXO/events.json","paper":"https://pith.science/paper/JXBUFLT7"},"agent_actions":{"view_html":"https://pith.science/pith/JXBUFLT76TGUGSIFI3RCUCBLXO","download_json":"https://pith.science/pith/JXBUFLT76TGUGSIFI3RCUCBLXO.json","view_paper":"https://pith.science/paper/JXBUFLT7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.02796&json=true","fetch_graph":"https://pith.science/api/pith-number/JXBUFLT76TGUGSIFI3RCUCBLXO/graph.json","fetch_events":"https://pith.science/api/pith-number/JXBUFLT76TGUGSIFI3RCUCBLXO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JXBUFLT76TGUGSIFI3RCUCBLXO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JXBUFLT76TGUGSIFI3RCUCBLXO/action/storage_attestation","attest_author":"https://pith.science/pith/JXBUFLT76TGUGSIFI3RCUCBLXO/action/author_attestation","sign_citation":"https://pith.science/pith/JXBUFLT76TGUGSIFI3RCUCBLXO/action/citation_signature","submit_replication":"https://pith.science/pith/JXBUFLT76TGUGSIFI3RCUCBLXO/action/replication_record"}},"created_at":"2026-07-04T23:52:23.337943+00:00","updated_at":"2026-07-04T23:52:23.337943+00:00"}