Loop-TNR analysis of CP(1) model with theta term
Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192, Japan
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Published online: 26 March 2018
The phase structure of the two dimensional lattice CP(1) model in the presence of the θ term is analyzed by tensor network methods. The tensor renormalization group, which is a standard renormalization method of tensor networks, is used for the regions θ = 0 and θ ≠ 0. Loop-TNR, which is more suitable for the analysis of near criticality, is also implemented for the region θ = 0. The application of Loop-TNR for the region θ ≠ 0 is left for future work.
© The Authors, published by EDP Sciences, 2018
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