arXiv:1611.00921 · International Symposium on Lattice Field Theory (LATTICE)
Phase structure analysis of CP(N-1) model using Tensor renormalization group
Hikaru Kawauchi, Shinji Takeda
Abstract
The phase structure of the lattice CP(\(N-1\)) model in two dimensions is analyzed by the tensor renormalization group (TRG) method. We focus on the case \(N=2\) and compare the numerical result of the TRG method with that of the strong-coupling analysis in the presence of the \(\theta\) term and investigate the nature of the phase transition at \(\theta=\pi\).