Contamination of Excited States in Quenched QCD Hadron Propagators

Abstract

Quenched QCD hadron spectrum is calculated with Wilson's quark action at $\beta =5.85$ and 6.0 on a $24^3\times 54$ lattice. We discuss the problem of whether we have extracted the mass of the ground state at these $\beta$'s without contamination of the excited states. We show that the masses of the first excited states turn out to be consistent with experiment when we are able to obtain the propagators up to the large time slice region where the propagators take the asymptotic forms of the ground states.

arXiv commenttalk by T.Yoshie at Lattice '92, Amsterdam, 4 pages, 6 postscript figures, preprint UTHEP-246

References in corpus (3)

• Phenomenology with Wilson fermions using smeared sources
• Quenched Hadrons using Wilson and O(a)-Improved Fermion Actions at beta=6.2
• Hadron Spectrum in QCD with Valence Wilson Fermions and Dynamical Staggered Fermions at $6/g^2=5.6

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• High statistics calculations of quenched QCD spectrum using various quark sources