Gauge-Invariant Smearing and Matrix Correlators using Wilson Fermions at beta=6.2

Details Gauge-Invariant Smearing and Matrix Correlators using Wilson Fermions at beta=6.2 Gauge-Invariant Smearing and Matrix Correlators using Wilson Fermions at beta=6.2

1993-03-18

arxiv.org/abs/hep-lat/9303009v1

Phys.Rev.D47:5128-5137,1993

Physics

High Energy Physics

High Energy Physics - Lattice

16 pages of LaTex ,22 postscript figures NOT included (sorry, postscript files available on request from s.collins@ed.ac.uk) E

Scientific paper

10.1103/PhysRevD.47.5128

We present an investigation of gauge-invariant smearing for Wilson fermions in quenched lattice QCD on a $24^3 \times 48$ lattice at $\beta = 6.2$. We demonstrate a smearing algorithm that allows a substantial improvement in the determination of the baryon spectrum obtained using propagators smeared at both source and sink, at only a small computational cost. We investigate the matrix of correlators constructed from local and smeared operators, and are able to expose excited states of both the mesons and baryons.

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