Scaling topological charge in the CP^3 model using a fixed point action

Details Scaling topological charge in the CP^3 model using a fixed point action Scaling topological charge in the CP^3 model using a fixed point action

1996-08-13

arxiv.org/abs/hep-lat/9608062v1

Nucl.Phys.Proc.Suppl. 53 (1997) 935-937

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, LaTeX file. Talk presented at LATTICE96(improvement)

Scientific paper

10.1016/S0920-5632(96)00819-5

We define a fixed point action in two-dimensional lattice CP^{N-1} models. The fixed point action is a classical perfect lattice action, which is expected to show strongly reduced cut-off effects in numerical simulations. Furthermore, the action has scale invariant instanton solutions, which enables us to define a topological charge without topological defects. We present results for the scaling of the topological suceptibility from a Monte Carlo simulation in the CP^3 model.

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