Optimization of field-dependent nonperturbative renormalization group flows
Optimization of field-dependent nonperturbative renormalization group flows
We investigate the influence of the momentum cutoff function on the field-dependent nonperturbative renormalization group flows for the three-dimensional Ising model, up to the second order of the derivative expansion. We show that, even when dealing with the full functional dependence of the renormalization functions, the accuracy of the critical …