{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"732634318ec0169ce4a49700b763ef046bd8f4f7e66efc642e84189551eed9a6","created":"2026-10-03T07:18:00Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"a8c1d521d52acde86424822c7c1e1faa601752814492cfb646863d42e57c23b8","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"identification","assisted_by":[],"external_id":"cm.non-abelian-quantum-hall.bilayer-graphene-even-denominator","kind":"well-posed","literature_status":"open","n":"1","parents":[],"plain":"Bilayer graphene shows several half-integer quantum Hall states with larger energy gaps than the gallium arsenide $5/2$ state, and which non-Abelian order each one has is not settled.","posed_since":"2017","precise":"For even-denominator states in Bernal bilayer graphene (half-integer fillings such as $-1/2, 3/2\\text{ and }7/2$ in $N = 1$ orbital levels), determine the topological order (Pfaffian, anti-Pfaffian or other) of each, including its dependence on displacement field and orbital or valley polarization. An answer gives $\\kappa_{xy}$ and quasiparticle charge per state, consistent with numerics.","problem_ref":null,"references":"","settled_by":"Thermal Hall and tunnelling-exponent measurements per state, combined with exact diagonalization including Landau-level mixing.","status_note":"Interferometry since 2024 reports e/4 and e/2 signals (arXiv:2412.19886); no thermal Hall measurement is known to this survey as of 2026.","title":"Topological order of even-denominator states in bilayer graphene","topic_ref":"ef024a2f66f3667f8a1263272e91fdabf80879850538a70f33d99943574b7c2c"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"278e324eeed180c436042fdcbb04ef302b5c860398bbb0ab99d4be44de62ebb4","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"eddaa107dee0bb8535ccafc0156ab8b010899038bd930515adaa37b99f55977e","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"7X2hdpgKIMojNoOwFaM8YsVxEOGRYUVBzCNO3wFB28V1EB6orOoN9idj9YvkUnTlXY_iNijwEeK4gvsXe2R7Bg"},"schema":"pubphys.envelope/1"},"record_hash":"278e324eeed180c436042fdcbb04ef302b5c860398bbb0ab99d4be44de62ebb4","leaf_index":1112}