Scaling topological charge in the CP ^{3} model using a fixed point action
Abstract
We define a fixed point action in twodimensional lattice CP ^{N1 } 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 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.
 Publication:

Nuclear Physics B Proceedings Supplements
 Pub Date:
 February 1997
 DOI:
 10.1016/S09205632(96)008195
 arXiv:
 arXiv:heplat/9608062
 Bibcode:
 1997NuPhS..53..935B
 Keywords:

 High Energy Physics  Lattice
 EPrint:
 3 pages, LaTeX file. Talk presented at LATTICE96(improvement)