arXiv:1011.6573·v1·High Energy Physics — Lattice
The excited hadron spectrum in lattice QCD using a new variance reduction method
Colin Morningstar🇺🇸 · A. Bell🇺🇸 · C.Y. Chen🇺🇸 · D. Lenkner🇺🇸 · C.H. Wong🇺🇸 · J. Bulava🇩🇪 · J. Foley🇺🇸 · K.J. Juge🇺🇸 · M. Peardon🇮🇪
Abstract
Progress in calculating the spectrum of excited baryons and mesons in lattice QCD is described. Correlation matrices of sets of spatially-extended hadron operators have been studied and their effectiveness in facilitating the extraction of excited-state energies is demonstrated. First applications of the stochastic LapH method, a new method of estimating the low-lying effects of quark propagation, are presented.
Comments: 4 pages, 2 figures, talk presented at ICHEP 2010, Paris, France, July 22-28, 2010