We apply to the CP^9 model two recently proposed numerical techniques for the simulation of systems with a theta-term. The algorithms, successfully tested in the strong coupling limit, are applied to the weak coupling region. The results agree and errors have been evaluated and are at the % level. The results scale well with the renormalization group equation and show that, for CP^9 in the presence of a theta-term, CP symmetry is spontaneously broken at $\theta=\pi$ in the continuum limit.
theta dependence of the CP9 model
GALANTE, ANGELO;
2004-01-01
Abstract
We apply to the CP^9 model two recently proposed numerical techniques for the simulation of systems with a theta-term. The algorithms, successfully tested in the strong coupling limit, are applied to the weak coupling region. The results agree and errors have been evaluated and are at the % level. The results scale well with the renormalization group equation and show that, for CP^9 in the presence of a theta-term, CP symmetry is spontaneously broken at $\theta=\pi$ in the continuum limit.File in questo prodotto:
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