The Volume Source Technique for flavor singlets: a second look

Details The Volume Source Technique for flavor singlets: a second look The Volume Source Technique for flavor singlets: a second look

2004-04-03

arxiv.org/abs/hep-lat/0404004v2

Eur.Phys.J. C38 (2004) 329-334

Physics

High Energy Physics

High Energy Physics - Lattice

11 pages, 6 figures, some formulations changed

Scientific paper

10.1140/epjc/s2004-02055-4

We reconsider the Volume Source Technique (VST) for the determination of flavor singlet quantities on the lattice. We point out a difficulty arising in the case of fermions in real representations of the gauge group and propose an improved version of the method (IVST) based on random gauge transformations of the background configuration. We compare the performance of IVST with the method based on stochastic estimators (SET). We consider the case of the N=1 Supersymmetric Yang-Mills Theory (SYM), where just one fermionic flavor is present, the gluino in the adjoint representation, and only flavor singlet states are possible. The work is part of an inclusive analysis of the spectrum of the lightest particles of the theory, based on the simulation of the model on a $16^3\cdot32$ lattice with dynamical gluinos in the Wilson scheme.

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