Conformal Spectrum of (Super) Chiral Ising and XY Models

Abstract

We determine the spectrum of scaling dimensions of composite operators in the critical Gross-Neveu-Yukawa and Nambu-Jona-Lasinio-Yukawa models through a next-to-leading order semiclassical computation. Their infrared fixed points belong to the chiral Ising and chiral XY universality classes, respectively. At next-to-leading order, we resolve the Lorentz structure of the operator spectrum. For the parameter values at which supersymmetry is expected to emerge in the infrared, we obtain a closed-form expression encoding the full spectrum within the semiclassical methodology. The resulting organization of operators into superconformal multiplets provides further evidence for emergent superconformal dynamics.

arXiv comment37 pages