TY - JOUR
T1 - Excited nucleon spectrum from lattice QCD with maximum entropy method
AU - Sasaki, K.
AU - Sasaki, S.
AU - Hatsuda, T.
AU - Asakawa, M.
N1 - Funding Information:
We appreciate A. Nakamura and C. Nonaka for helping us develop codes for our simulations from their open source codes (Lattice Tool Kit [lo]). This work is supported by the Supercomputer
PY - 2004/3
Y1 - 2004/3
N2 - We study excited states of the nucleon in quenched lattice QCD with the spectral analysis using the maximum entropy method. Our simulations are performed on three lattice sizes 163 × 32, 243 × 32 and 323 × 32, at β = 6.0 to address the finite volume issue. We find a significant finite volume effect on the mass of the Roper resonance for light quark masses. After removing this systematic error, its mass becomes considerably reduced toward the direction to solve the level order puzzle between the Roper resonance N′ (1440) and the negative-parity nucleon N* (1535).
AB - We study excited states of the nucleon in quenched lattice QCD with the spectral analysis using the maximum entropy method. Our simulations are performed on three lattice sizes 163 × 32, 243 × 32 and 323 × 32, at β = 6.0 to address the finite volume issue. We find a significant finite volume effect on the mass of the Roper resonance for light quark masses. After removing this systematic error, its mass becomes considerably reduced toward the direction to solve the level order puzzle between the Roper resonance N′ (1440) and the negative-parity nucleon N* (1535).
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U2 - 10.1016/S0920-5632(03)02533-7
DO - 10.1016/S0920-5632(03)02533-7
M3 - Article
AN - SCOPUS:7044242606
VL - 129-130
SP - 212
EP - 214
JO - Nuclear and Particle Physics Proceedings
JF - Nuclear and Particle Physics Proceedings
SN - 2405-6014
ER -