Tuesday, February 19, 2013

1302.4152 (Benjamin J. Menadue et al.)

Correlation Matrix Techniques at Non-Zero Momentum    [PDF]

Benjamin J. Menadue, Waseem Kamleh, Derek B. Leinweber, M. Selim Mahbub, Benjamin J. Owen
In recent years, the use of variational analysis techniques in lattice QCD has been demonstrated to be remarkably successful in the investigation of the rest-mass spectrum of many hadrons. However, due to parity-mixing, more care must be taken for investigations of boosted states to ensure that the projected correlation functions provided by the variational analysis correspond to the same states at zero momentum. In this Letter we demonstrate a novel method for ensuring the successful and consistent isolation of boosted states by expanding the operator basis used to construct the correlation matrix to include operators of the opposite parity.
View original: http://arxiv.org/abs/1302.4152

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