Walking Dynamics Guaranteed

Abstract

We report evidence for a continuous transition from an infrared conformal phase to a chirally broken one in four dimensions. We study a model with two Dirac fermions in the adjoint representation of an SU(2) gauge interaction and a chirally symmetric four-fermion interaction. At large four-fermion coupling, the model goes through a transition into a chirally broken phase and infrared conformality is lost. We show strong evidence that this transition is continuous, which would guarantee walking dynamics within the scaling region in the chirally broken phase.