Monte Carlo renormalization-group analysis of the lattice phi 4 model in D = 3,4

We present a simple, sophisticated method to capture renormalization-group flow in Monte Carlo simulation, which provides important information of critical phenomena. We applied the method to the D = 3,4 lattice phi 4 model and obtained a renormalization flow diagram that well reproduces theoretically predicted behavior of the continuum phi 4 model. We also show that the method can be easily applied to much more complicated models, such as frustrated spin models.