Author(s): Zhi-Qiang Gao, Taige Wang, and Dung-Hai Lee In two dimensions a Chern insulator can be tuned from a topological state to an ordinary band insulator without breaking any symmetry, offering a clean example of “beyond-Landau” criticality. We show that electron interactions drive this transition to the Gross-Neveu-Yukawa (GNY) fixed point, a benc… [Phys. Rev. Lett. 137, 166603] Published Fri Oct 16, 2026