Instanton classical solutions of SU(3) fixed point actions on open lattices

Details Instanton classical solutions of SU(3) fixed point actions on open lattices Instanton classical solutions of SU(3) fixed point actions on open lattices

1997-11-17

arxiv.org/abs/hep-lat/9711030v2

Phys.Rev. D58 (1998) 054502

Physics

High Energy Physics

High Energy Physics - Lattice

23 pages, LaTeX, 4 eps figures, epsfig.sty; some comments added

Scientific paper

10.1103/PhysRevD.58.054502

We construct instanton-like classical solutions of the fixed point action of a suitable renormalization group transformation for the SU(3) lattice gauge theory. The problem of the non-existence of one-instantons on a lattice with periodic boundary conditions is circumvented by working on open lattices. We consider instanton solutions for values of the size (0.6-1.9 in lattice units) which are relevant when studying the SU(3) topology on coarse lattices using fixed point actions. We show how these instanton configurations on open lattices can be taken into account when determining a few-couplings parametrization of the fixed point action.

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