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arXiv · hep-lat/9809139

Phase structure of CP(N-1) model with topological term

M. Imachi·S. Kanou·H. Yoneyama
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Abstract

CP(N-1) model with topological term is numerically studied. The topological charge distribution P(Q) is calculated and then transformed to the partition function Z($θ$) as a function of $θ$ parameter. In the strong coupling region, P(Q) shows a gaussian behavior, which indicates a first order phase transition at $θ=π$. In the weak coupling region, P(Q) deviates from gaussian. A bending behavior of resulting F($θ$) at $θ\neq π$, which might be a signal of a first order phase transition, could be misled by large errors coming from the fourier transform of P(Q). Results are shown mainly for CP(3) case.

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M. Imachi, S. Kanou, H. Yoneyama. 1998-09-18. Phase structure of CP(N-1) model with topological term. https://doi.org/10.1016/s0920-5632(99)85162-7

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