{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:4YARE7FDOTYF7MA34GEDLSKZPT","short_pith_number":"pith:4YARE7FD","schema_version":"1.0","canonical_sha256":"e601127ca374f05fb01be18835c9597cf4e7461b3e81f04b2462ed4c00535ff8","source":{"kind":"arxiv","id":"1603.03093","version":3},"attestation_state":"computed","paper":{"title":"Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"B. Andrei Bernevig, Barry Bradlyn, C. Felser, Jennifer Cano, M.G. Vergniory, R. J. Cava, Zhijun Wang","submitted_at":"2016-03-09T22:53:25Z","abstract_excerpt":"In quantum field theory, we learn that fermions come in three varieties: Majorana, Weyl, and Dirac. Here we show that in solid state systems this classification is incomplete and find several additional types of crystal symmetry-protected free fermionic excitations . We exhaustively classify linear and quadratic 3-, 6- and 8- band crossings stabilized by space group symmetries in solid state systems with spin-orbit coupling and time-reversal symmetry. Several distinct types of fermions arise, differentiated by their degeneracies at and along high symmetry points, lines, and surfaces. Some nota"},"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":"1603.03093","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-03-09T22:53:25Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"title_canon_sha256":"34491587fada5d89b72a95bb768a38fec69d2293e6016e96b817c0102b580231","abstract_canon_sha256":"e60578c45e01f691b7fc9431a351c346185497c4df89fcb9f2837f06df84d10a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:41.709992Z","signature_b64":"IUQMzxDCox5G6bkVT92uURWu2mimFG2F3n2imjxUkmUwo5SAtRnSsl6K0UowBo/cYqmgbMRJn82plkRPTNEaDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e601127ca374f05fb01be18835c9597cf4e7461b3e81f04b2462ed4c00535ff8","last_reissued_at":"2026-05-18T01:10:41.709603Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:41.709603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"B. Andrei Bernevig, Barry Bradlyn, C. Felser, Jennifer Cano, M.G. Vergniory, R. J. Cava, Zhijun Wang","submitted_at":"2016-03-09T22:53:25Z","abstract_excerpt":"In quantum field theory, we learn that fermions come in three varieties: Majorana, Weyl, and Dirac. Here we show that in solid state systems this classification is incomplete and find several additional types of crystal symmetry-protected free fermionic excitations . We exhaustively classify linear and quadratic 3-, 6- and 8- band crossings stabilized by space group symmetries in solid state systems with spin-orbit coupling and time-reversal symmetry. Several distinct types of fermions arise, differentiated by their degeneracies at and along high symmetry points, lines, and surfaces. Some nota"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.03093","kind":"arxiv","version":3},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1603.03093","created_at":"2026-05-18T01:10:41.709667+00:00"},{"alias_kind":"arxiv_version","alias_value":"1603.03093v3","created_at":"2026-05-18T01:10:41.709667+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.03093","created_at":"2026-05-18T01:10:41.709667+00:00"},{"alias_kind":"pith_short_12","alias_value":"4YARE7FDOTYF","created_at":"2026-05-18T12:29:58.707656+00:00"},{"alias_kind":"pith_short_16","alias_value":"4YARE7FDOTYF7MA3","created_at":"2026-05-18T12:29:58.707656+00:00"},{"alias_kind":"pith_short_8","alias_value":"4YARE7FD","created_at":"2026-05-18T12:29:58.707656+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/4YARE7FDOTYF7MA34GEDLSKZPT","json":"https://pith.science/pith/4YARE7FDOTYF7MA34GEDLSKZPT.json","graph_json":"https://pith.science/api/pith-number/4YARE7FDOTYF7MA34GEDLSKZPT/graph.json","events_json":"https://pith.science/api/pith-number/4YARE7FDOTYF7MA34GEDLSKZPT/events.json","paper":"https://pith.science/paper/4YARE7FD"},"agent_actions":{"view_html":"https://pith.science/pith/4YARE7FDOTYF7MA34GEDLSKZPT","download_json":"https://pith.science/pith/4YARE7FDOTYF7MA34GEDLSKZPT.json","view_paper":"https://pith.science/paper/4YARE7FD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1603.03093&json=true","fetch_graph":"https://pith.science/api/pith-number/4YARE7FDOTYF7MA34GEDLSKZPT/graph.json","fetch_events":"https://pith.science/api/pith-number/4YARE7FDOTYF7MA34GEDLSKZPT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4YARE7FDOTYF7MA34GEDLSKZPT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4YARE7FDOTYF7MA34GEDLSKZPT/action/storage_attestation","attest_author":"https://pith.science/pith/4YARE7FDOTYF7MA34GEDLSKZPT/action/author_attestation","sign_citation":"https://pith.science/pith/4YARE7FDOTYF7MA34GEDLSKZPT/action/citation_signature","submit_replication":"https://pith.science/pith/4YARE7FDOTYF7MA34GEDLSKZPT/action/replication_record"}},"created_at":"2026-05-18T01:10:41.709667+00:00","updated_at":"2026-05-18T01:10:41.709667+00:00"}