Asymptotic safety on the lattice: The Nonlinear O(N) Sigma Model
Asymptotic safety on the lattice: The Nonlinear O(N) Sigma Model
We study the non-perturbative renormalization group flow of the nonlinear O(N) sigma model in two and three spacetime dimensions using a scheme that combines an effective local Hybrid Monte Carlo update routine, blockspin transformations and a Monte Carlo demon method. In two dimensions our results verify perturbative renormalizability. In three …