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arXiv · hep-lat/0601034

Baryon Operators and Baryon Spectroscopy

S. Basak·R. G. Edwards·G. T. Fleming·U. M. Heller·A. Lichtl·C. Morningstar·D. G. Richards·I. Sato·S. Wallace
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Abstract

The issues involved in a determination of the baryon resonance spectrum in lattice QCD are discussed. The variational method is introduced and the need to construct a sufficient basis of interpolating operators is emphasised. The construction of baryon operators using group-theory techniques is outlined. We find that the use both of quark-field smearing and link-field smearing in the operators is essential firstly to reduce the coupling of operators to high-frequency modes and secondly to reduce the gauge-field fluctuations in correlators. We conclude with a status report of our current investigation of baryon spectroscopy.

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S. Basak, R. G. Edwards, G. T. Fleming, U. M. Heller, A. Lichtl, C. Morningstar, D. G. Richards, I. Sato, S. Wallace. 2006-01-26. Baryon Operators and Baryon Spectroscopy. https://doi.org/10.1016/j.nuclphysbps.2006.01.040

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