Prospects of `Topologically Unquenched QCD' from a study of the analogous importance sampling method in the massive Schwinger model

Details Prospects of `Topologically Unquenched QCD' from a study of the analogous importance sampling method in the massive Schwinger model Prospects of `Topologically Unquenched QCD' from a study of the analogous importance sampling method in the massive Schwinger model

1999-09-08

arxiv.org/abs/hep-lat/9909046v1

Nucl.Phys.Proc.Suppl. 83 (2000) 443-445

Physics

High Energy Physics

High Energy Physics - Lattice

contribution to LATTICE99, 3 pages, LaTeX with 3 figures, espcrc2.sty, epsfig.sty

Scientific paper

I give a quick summary of my proposal for simulating an improvement on quenched QCD with dynamical fermions which interact with the gluon configuration only via the topological index of the latter. It amounts to include only the topological part of the functional determinant into the measure, thereby absorbing a correction factor into the observable. I discuss the prospects of this concept from a study in the massive $N_f$-flavour Schwinger model, where the correction factor is indeed found to be of order $O(1)$.

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