Interacting Chern insulator transition on the sphere: revealing the Gross-Neveu-Yukawa criticality
The study investigates how electron interactions drive a transition between a trivial band insulator and a Chern insulator by studying the Gross–Neveu–Yukawa (GNY) fixed point. Using exact diagonalization on a sphere, researchers found eight distinct conformal multiplets, including new operators like Dµν, providing numerical evidence for emergent 3D conformal symmetry in this critical system.