On the existence of a first order phase transition at small vacuum angle $θ$ in the $CP^3$ model
arXiv:hep-lat/9312019 · doi:10.1016/0920-5632(94)90490-1
Abstract
We examine the phase structure of the $CP^3$ 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.
3 pages, DESY 93-177, talk presented by G. Schierholz at Lattice93