Bayesian approach to the first excited nucleon state in lattice QCD

Details Bayesian approach to the first excited nucleon state in lattice QCD Bayesian approach to the first excited nucleon state in lattice QCD

2002-09-04

arxiv.org/abs/hep-lat/0209059v1

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2002(spectrum), Latex with espcrc2.sty, 3 pages, 3 figures

Scientific paper

10.1016/S0920-5632(03)01545-7

We present preliminary results from the first attempt to reconstruct the spectral function in the nucleon and $\Delta$ channels from lattice QCD data using the maximum entropy method (MEM). An advantage of the MEM analysis is to enable us to access information of the excited state spectrum. Performing simulations on two lattice volumes, we confirm the large finite size effect on the first excited nucleon state in the lighter quark mass region.

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