Non-Perturbative Renormalization Group for Ising-Nematic Criticality: A Closed-Form Nonlocal Ansatz
This study uses a non-perturbative renormalization group to analyze a metallic Ising-nematic quantum critical point. The authors propose a unique nonlocal framework where the anomalous dynamical exponent 'a' is determined self-consistently from internal consistency conditions. They found that lower-order calculations fail to yield a fixed point, necessitating higher-order corrections to define the stable phase space for critical exponents.