• The excited hadron spectrum in lattice QCD using a new variance reduction method

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    2010

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    Morningstar, C., Bell, A., Chen, C.Y., Lenkner, D., Wong, C.H., Bulava, J., Foley, J., Juge, K.J., Peardon, M. The excited hadron spectrum in lattice QCD using a new variance reduction method, Proceeding of Science, 35th International Conference of High Energy Physics, ICHEP 2010, July 22-28, Paris.

    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.

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    http://hdl.handle.net/2262/89465

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    Pure & Applied Mathematics (Scholarly Publications)
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    Keywords

    Decomposition methods, Energy conservation, Force-gradient, Nested algorithms, Multi-rate schemes, Operator splitting, Schwinger model, Numerical geometric integration
    Author's Homepage: http://people.tcd.ie/peardonm

    Author: Peardon, Michael

    Other Titles: Proceeding of Science
    Type of material: Conference Paper