Fixed point action and topology in the CP3 model

被引：26

作者：

Burkhalter, R

机构：

[1] Institut für Theoretische Physik, Universität Bern, Bern, CH-3012

来源：

PHYSICAL REVIEW D | 1996年 / 54卷 / 06期

关键词：

D O I：

10.1103/PhysRevD.54.4121

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We define a fixed point action in two-dimensional lattice CPN-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 CP3 model in a Monte Carlo simulation, we study the topological susceptibility.

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页码：4121 / 4130

页数：10

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