Multigrid for propagators of staggered fermions in four-dimensional $SU(2)$ gauge fields

Details Multigrid for propagators of staggered fermions in four-dimensional $SU(2)$ gauge fields Multigrid for propagators of staggered fermions in four-dimensional $SU(2)$ gauge fields

1992-11-04

arxiv.org/abs/hep-lat/9211008v1

Nucl. Phys. Proc. Suppl. 30 (1993) 257

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, 3 figures (one LaTeX-figure, two figures appended as encapsulated ps files); Contribution to LATTICE '92, requires es

Scientific paper

10.1016/0920-5632(93)90203-I

Multigrid (MG) methods for the computation of propagators of staggered fermions in non-Abelian gauge fields are discussed. MG could work in principle in arbitrarily disordered systems. The practical variational MG methods tested so far with a ``Laplacian choice'' for the restriction operator are not competitive with the conjugate gradient algorithm on lattices up to $18^4$. Numerical results are presented for propagators in $SU(2)$ gauge fields.

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