Exploring three-nucleon forces in lattice QCD

Takumi Doi, Sinya Aoki, Tetsuo Hatsuda, Yoichi Ikeda, Takashi Inoue, Noriyoshi Ishii, Keiko Murano, Hidekatsu Nemura, Kenji Sasaki

研究成果: Contribution to journalArticle

75 引用 (Scopus)

抜粋

Three-nucleon forces (3NF) are investigated from two-flavor lattice QCD simulations. We utilize the Nambu-Bethe-Salpeter (NBS) wave function to determine two-nucleon forces (2NF) and 3NF in the same framework. As a first exploratory study, we extract 3NF in which three nucleons are aligned linearly with an equal spacing. This is the simplest geometrical configuration which reduces the huge computational cost of calculating the NBS wave function. Quantum numbers of the three-nucleon system are chosen to be (I, J P) = (1/2,1/2 +) (the triton channel). Lattice QCD simulations are performed using N f = 2 dynamical clover fermion configurations at the lattice spacing of a = 0.156 fm on a 16 3 × 32 lattice with a large quark mass corresponding to m π = 1.13 GeV. We find repulsive 3NF at short distance in the triton channel. Several sources of systematic errors are also discussed.

元の言語英語
ページ(範囲)723-738
ページ数16
ジャーナルProgress of Theoretical Physics
127
発行部数4
DOI
出版物ステータス出版済み - 4 1 2012
外部発表Yes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Doi, T., Aoki, S., Hatsuda, T., Ikeda, Y., Inoue, T., Ishii, N., Murano, K., Nemura, H., & Sasaki, K. (2012). Exploring three-nucleon forces in lattice QCD. Progress of Theoretical Physics, 127(4), 723-738. https://doi.org/10.1143/PTP.127.723