Variational method for lattice spectroscopy with ghosts
- 18 January 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 73 (1) , 017502
- https://doi.org/10.1103/physrevd.73.017502
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 nonstandard 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.Keywords
All Related Versions
This publication has 21 references indexed in Scilit:
- Masses of excited baryons from chirally improved quenched lattice QCDNuclear Physics A, 2005
- Excited hadrons from improved interpolating fieldsNuclear Physics B - Proceedings Supplements, 2005
- Roper resonance and S11(1535) from lattice QCDPhysics Letters B, 2005
- Scalar meson in dynamical and partially quenched two-flavor QCD: Lattice results and chiral loopsPhysical Review D, 2004
- Spatially improved operators for excited hadrons on the latticePhysical Review D, 2004
- Chiral loops and ghost states in the quenched scalar propagatorPhysical Review D, 2001
- andstructure functions from lattice QCDPhysical Review D, 1997
- How to calculate the elastic scattering matrix in two-dimensional quantum field theories by numerical simulationNuclear Physics B, 1990
- Non-singlet axial vector couplings of the baryon octet in lattice QCDPhysics Letters B, 1989
- Adjoint sources in lattice gauge theoryNuclear Physics B, 1985