Variational method for lattice spectroscopy with ghosts

Abstract

We discuss the variational method used in lattice spectroscopy calculations. In particular we address the role of ghost contributions which appear in quenched or partially quenched simulations and have a non-standard euclidean time dependence. We show that the ghosts can be separated from the physical states. Our result is illustrated with numerical data for the scalar meson.

arXiv comment4 pages, 1 figure

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Cited by in corpus (18)

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• Excited hadrons on the lattice: Mesons
• Hadron Spectroscopy with Dynamical Chirally Improved Fermions
• A lattice study of light scalar tetraquarks
• Excitations of single-beauty hadrons
• Isolating Excited States of the Nucleon in Lattice QCD
• Schwinger functions and light-quark bound states
• Derivative sources in lattice spectroscopy of excited light-quark mesons
• Isolating the Roper Resonance in Lattice QCD
• QCD with two light dynamical chirally improved quarks: Mesons
• Couplings of hybrid operators to ground and excited states of bottomonia
• Exploring the meson spectrum with twisted mass lattice QCD
• Low and high spin mesons from $N_f=2$ Clover-Wilson lattices
• The Hadron Spectrum from Lattice QCD
• Evolutionary Fitting Methods for the Extraction of Mass Spectra in Lattice Field Theory
• Excited mesons from $N_f=2$ dynamical Clover Wilson lattices