Excited nucleon spectrum from lattice QCD with maximum entropy method

K. Sasaki; S. Sasaki; T. Hatsuda; M. Asakawa

doi:10.1016/S0920-5632(03)02533-7

Excited nucleon spectrum from lattice QCD with maximum entropy method

K. Sasaki, S. Sasaki, T. Hatsuda, M. Asakawa

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

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).

Original language	English
Pages (from-to)	212-214
Number of pages	3
Journal	Nuclear Physics B - Proceedings Supplements
Volume	129-130
DOIs	https://doi.org/10.1016/S0920-5632(03)02533-7
Publication status	Published - 2004 Mar
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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title = "Excited nucleon spectrum from lattice QCD with maximum entropy method",

abstract = "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).",

author = "K. Sasaki and S. Sasaki and T. Hatsuda and M. Asakawa",

year = "2004",

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doi = "10.1016/S0920-5632(03)02533-7",

language = "English",

volume = "129-130",

pages = "212--214",

journal = "Nuclear and Particle Physics Proceedings",

issn = "2405-6014",

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T1 - Excited nucleon spectrum from lattice QCD with maximum entropy method

AU - Sasaki, K.

AU - Sasaki, S.

AU - Hatsuda, T.

AU - Asakawa, M.

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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DO - 10.1016/S0920-5632(03)02533-7

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VL - 129-130

SP - 212

EP - 214

JO - Nuclear and Particle Physics Proceedings

JF - Nuclear and Particle Physics Proceedings

SN - 2405-6014

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