Two-Dimensional CP2 Model with -Term and Topological Charge Distributions

Authors:
  • MIM. Imachi
    M. Imachi
  • SKS. Kanou
    S. Kanou
  • HYH. Yoneyama
    H. Yoneyama
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Abstract
Topological charge distributions in 2 dimensional CP^2 model with theta-term is calculated. In strong coupling regions, topological charge distribution is approximately given by Gaussian form as a function of topological charge and this behavior leads to the first order phase transition at \theta=\pi. In weak coupling regions it shows non-Gaussian distribution and the first order phase transition disappears. Free energy as a function of \theta shows "flattening" behavior at theta=theta_f<pi, when we calculate the free energy directly from topological charge distribution. Possible origin of this flattening phenomena is prensented.Comment: 17 pages,7 figure
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