Excited hadrons from improved interpolating fields

The calculation of quark propagators for Ginsparg-Wilson-type Dirac operators is costly and thus limited to a few different sources. We present a new approach for determining spatially optimized operators for lattice spectroscopy of excited hadrons. Jacobi smeared quark sources with different widths...

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Published in:arXiv.org 2004-09
Main Authors: Burch, Tommy, Gattringer, Christof, Leonid Ya Glozman, Kleindl, Reinhard, Lang, C B, Schäfer, Andreas
Format: Article
Language:English
Subjects:
Excitation spectra
Hadrons
Mesons
Operators
Quarks
Wave functions
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Gattringer, Christof
Leonid Ya Glozman
Kleindl, Reinhard
Lang, C B
Schäfer, Andreas
description The calculation of quark propagators for Ginsparg-Wilson-type Dirac operators is costly and thus limited to a few different sources. We present a new approach for determining spatially optimized operators for lattice spectroscopy of excited hadrons. Jacobi smeared quark sources with different widths are combined to construct hadron operators with different spatial wave functions. We study the Roper state and excited rho and pion mesons.
doi_str_mv 10.48550/arxiv.0409014
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subjects Excitation spectra
Hadrons
Mesons
Operators
Quarks
Wave functions
title Excited hadrons from improved interpolating fields
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