{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"809e69438776c76752264df6bcb1d399880d78a06a94b4e167f510bdf092dd93","created":"2026-10-03T07:18:00Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"eccefba8b6caf44daff69bc15f315f3e31a219e99141f178853e9ea1b38b6950","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"classification","assisted_by":[],"external_id":"cm.hubbard-mott.triangular-intermediate-phase","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"On a triangular lattice, between the metal at weak repulsion and the magnet at strong repulsion, there may be a quantum spin liquid, a state in which spins keep fluctuating at zero temperature.","posed_since":"","precise":"For the half-filled triangular-lattice Hubbard model, determine whether the intermediate window found in cylinder DMRG (approximately $8.5 < U/t < 10.5$, with boundaries that depend on cylinder width) is a chiral spin liquid, a gapless spin liquid, a weakly ordered magnet, or a finite-width artifact in the two-dimensional limit. An answer is the ground-state classification (order parameters, scalar chirality, topological degeneracy) with controlled width extrapolation.","problem_ref":null,"references":"","settled_by":"Consistent results from DMRG on cylinders of increasing circumference and from independent two-dimensional methods for the chirality and spin order parameters.","status_note":"Cylinder DMRG (2020) found a chiral spin liquid in the intermediate window; its survival in two dimensions is not established.","title":"Nature of the intermediate phase of the triangular-lattice Hubbard model","topic_ref":"c72f37399f69cded53ebd299920fa33be67ae1baf0e499d87c1962d53668d71d"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"5caac8bfc1293e9cf24900bc30bb008cb73535e2b7228ebdac8b6c825e360383","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"ce6b5eb377ccf2e06dcb12244308da28e7273dc6b12bd3cd9e907efc204357e7","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"PwodO6GuO4QrU9Nzz3INYRE7OsLyOmJpOPNnAN3DViFZfv_oAJIeUNATjupXHrJ5SBROgdUdX3YeDZdgltJ2Aw"},"schema":"pubphys.envelope/1"},"record_hash":"5caac8bfc1293e9cf24900bc30bb008cb73535e2b7228ebdac8b6c825e360383","leaf_index":1028}