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Scaling topological charge in the CP^3 spin model

Ulli Wolff
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Abstract

The CP^3 spin model is simulated at large correlation lengths in two dimensions. An overrelaxation algorithm is employed which yields reduced critical slowing down with dynamical exponents z around unity. We compare our results with recent multigrid data on the massgap m and the spin susceptibility and confirm the absence of asymptotic scaling. As a new result we find scaling for the universal topological susceptibility with values extrapolating to chi_t / m^2 = 0.156(2) in the continuum limit.

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Ulli Wolff. 1992-05-01. Scaling topological charge in the CP^3 spin model. https://doi.org/10.1016/0370-2693(92)91931-x

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