International Symposium on Lattice Field Theory (LATTICE)
Tensor renormalization group analysis of CP(N-1) model in two dimensions
Hikaru Kawauchi
Abstract
We apply the higher order tensor renormalization group to lattice CP(N -1) model in two dimensions.A tensor network representation of CP(N -1) model is derived.We confirm that the numerical results of the CP(1) model without the θ -term using this method are consistent with that of the O(3) model which is analyzed by the same method in the region β ≫ 1 and that obtained by Monte Carlo simulation in a wider range of β .