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arXiv · hep-lat/9512032

Fixed Point Action and Topology in the CP^3 Model

Rudolf Burkhalter
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Abstract

We define a fixed point action in two-dimensional lattice ${\rm CP}^{N-1}$ models. The fixed point action is a classical perfect lattice action, which is expected to show strongly reduced cutoff effects in numerical simulations. Furthermore, the action has scale-invariant instanton solutions, which enables us to define a correct topological charge without topological defects. Using a parametrization of the fixed point action for the ${\rm CP}^{3}$ model in a Monte Carlo simulation, we study the topological susceptibility.

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Rudolf Burkhalter. 1996-08-13. Fixed Point Action and Topology in the CP^3 Model. https://doi.org/10.1103/physrevd.54.4121

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