Improving Stochastic Estimator Techniques for Disconnected Diagrams
J. Viehoff, N. Eicker, S. Guesken, H. Hoeber, P. Lacock, Th. Lippert, G. Ritzenhoefer, K. Schilling, A. Spitz, P. Ueberholz
Abstract
Disconnected diagrams are expected to be sensitive to the inclusion of dynamical fermions. We present a feasibility study for the observation of such effects on the nucleonic matrix elements of the axial vector current, using SESAM full QCD vacuum configurations with Wilson fermions on 163× 32 lattices, at β=5.6. Starting from the standard methods developed by the Kentucky and Tsukuba groups, we investigate the improvement from various refinements thereof.
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