{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"5575061808fbc2d5e8bfae2d650d7e7b463c55912cb403557abcee9bc08fdd43","created":"2026-10-03T07:18:08Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"54cf058491de17e9abd2a1641807032b76e07facb7678653fff72146a6d6c6d1","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"classification","assisted_by":[],"external_id":"qft.cft-rg.adjoint-qcd-ir","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"A close relative of QCD, with matter particles of a different type, has several candidate behaviors at long distances. Which one it chooses is unknown.","posed_since":"","precise":"4D $\\mathrm{SU}(2)$ gauge theory with two massless Weyl fermions in the adjoint representation (equivalently one adjoint Dirac fermion) has $\\mathrm{SU}(2)_{R}$ flavor and $Z_{8}$ discrete chiral symmetry. Determine its deep-infrared phase among the candidates: confinement with $\\mathrm{SU}(2)_{R} \\to \\mathrm{U}(1)$ breaking (a $\\mathrm{CP}^{1}$ sigma model), confinement with massless composite fermions, or an interacting CFT (Cordova and Dumitrescu 2018; Anber and Poppitz 2018).","problem_ref":null,"references":"","settled_by":"Lattice simulation of SU(2) with one adjoint Dirac fermion at small mass and large volume, measuring the spectrum, chiral condensate and mass anomalous dimension.","status_note":"Lattice studies (2014-2024) report near-conformal spectra with a large mass anomalous dimension, not conclusive between the candidates.","title":"Infrared phase of SU(2) gauge theory with two adjoint Weyl fermions","topic_ref":"59b3cca1f32dc01e525b6517c866b60ced9512aa01bc51694ea2f6fc00c1ca06"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"0ce3d9c082372e4174f99030e3ae312a070600771c920feca7d1bce6ff366830","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"021ab7161537223adefe10ab7cc7a4ea8838abd8e22d961b4f101910b1d1430e","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"NIlIWZpwuAiaDHj0YcC8wIEr3hKF9uR2ezC9Q8pLh-pP7mkKryTaaiUG822HRokM6rjy8dUrcDWqeanI7KvGDQ"},"schema":"pubphys.envelope/1"},"record_hash":"0ce3d9c082372e4174f99030e3ae312a070600771c920feca7d1bce6ff366830","leaf_index":1891}