Maximum entropy analysis of hadron spectral functions and excited states in quenched lattice QCD

Details Maximum entropy analysis of hadron spectral functions and excited states in quenched lattice QCD Maximum entropy analysis of hadron spectral functions and excited states in quenched lattice QCD

2001-10-16

arxiv.org/abs/hep-lat/0110127v1

Nucl.Phys.Proc.Suppl. 106 (2002) 233-235

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2001(spectrum), 3 pages

Scientific paper

Employing the maximum entropy method we extract the spectral functions from meson correlators at four lattice spacings in quenched QCD with the Wilson quark action. We confirm that the masses and decay constants, obtained from the position and the area of peaks, agree well with the results from the conventional exponential fit. For the first excited state, we obtain $m_{\pi_1} = 660(590)$ MeV, $m_{\rho_1} = 1540(570)$ MeV, and $f_{\rho_1} = 0.085(36)$ in the continuum limit.

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