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Type: Journal article
Title: Parity-expanded variational analysis for nonzero momentum
Author: Stokes, F.
Kamleh, W.
Leinweber, D.
Mahbub, M.
Menadue, B.
Owen, B.
Citation: Physical Review D: Particles, Fields, Gravitation and Cosmology, 2015; 92(11):114506-1-114506-10
Publisher: American Physical Society
Issue Date: 2015
ISSN: 1550-7998
Statement of
Finn M. Stokes, Waseem Kamleh, Derek B. Leinweber, M. Selim Mahbub, Benjamin J. Menadue, and Benjamin J. Owen
Abstract: In recent years, the use of variational analysis techniques in lattice QCD has been demonstrated to be 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 paper we present the parity-expanded variational analysis (PEVA) technique, a novel method for ensuring the successful and consistent isolation of boosted baryons through a parity expansion of the operator basis used to construct the correlation matrix.
Rights: © 2015 American Physical Society
DOI: 10.1103/PhysRevD.92.114506
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