On the existence of a first order phase transition at small vacuum angle θ in the CP3 model
S. Olejnik, G. Schierholz
Abstract
We examine the phase structure of the CP3 model as a function of θ in the weak coupling regime. It is shown that the model has a first order phase transition at small θ. We pay special attention to the extrapolation of the data to the infinite volume. It is found that the critical value of θ decreases towards zero as β is taken to infinity.
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