教授・センター長 Professor・Director

所属グループ	格子QCD
居室番号	202
Eメールアドレス	shoji.hashimoto-AT

◎研究内容

量子色力学(QCD)を格子上に定義して数値シミュレーションを使って計算する格子QCDの研究が主な課題です。
場の理論を非摂動的に解くことができるので、低エネルギーでの粒子の性質など、さまざまなことを調べることができます。

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◎経歴

１９９０年 ３月 広島大学 理学部 物理学科 卒業
１９９４年 ７月 広島大学大学院 理学研究科博士課程 修了、博士（理学）
１９９４年 ８月 日本学術振興会特別研究員
１９９５年 ８月 高エネルギー物理学研究所・データ処理センター・助手
２００２年 ６月 高エネルギー加速器研究機構・素粒子原子核研究所・助教授
２０１０年 ９月 高エネルギー加速器研究機構・素粒子原子核研究所・教授

◎論文リスト

より新しいものは ORCiD をご参照ください。

S Aoki, T.-W. Chiu, G. Cossu, X. Feng, H. Fukaya, S. Hashimoto, T.-H. Hsieh, T. Kaneko, H. Matsufuru, J. Noaki, T. Onogi, E. Shintani, K. Takeda, "Simulation of quantum chromodynamics on the lattice with exactly chiral lattice fermions," PTEP 2012 (2012) 01A106.

H. Fukaya, S. Aoki, T.W. Chiu, S. Hashimoto, T. Kaneko, J. Noaki, T. Onogi, N. Yamada [JLQCD and TWQCD collaborations], "Determination of the chiral condensate from QCD Dirac spectrum on the lattice," Physical Review D83, 074501 (2011).

K. Takeda, S. Aoki, S. Hashimoto, T. Kaneko, J. Noaki, T. Onogi [JLQCD collaboration], "Nucleon strange quark content from two-flavor lattice QCD with exact chiral symmetry", Physical Review D83, 114506 (2011).

E. Shintani, S. Aoki, H. Fukaya, S. Hashimoto, T. Kaneko, T. Onogi, N. Yamada [JLQCD collaboration], "Strong coupling constant from vacuum polarization functions in three-flavor lattice QCD with dynamical overlap fermions," Physical Review D82, 074505 (2010).

H. Fukaya, S. Aoki, S. Hashimoto, T. Kaneko, J. Noaki, T. Onogi, N. Yamada [JLQCD collaboration], "Determination of the chiral condensate from 2+1-flavor lattice QCD," Physical Review Letters 104, 122002 (2010).

J.Noaki, T.W.Chiu, H.Fukaya, S.Hashimoto, H.Matsufuru, T.Onogi, E.Shintani, N.Yamada [JLQCD and TWQCD collaborations], "Non-perturbative renormalization of bilinear operators with dynamical overlap fermions," Physical Review D81, 034502 (2010).

S.Aoki, T.W.Chiu, H.Fukaya, S.Hashimoto, T.H.Hsieh, T.Kaneko, H.Matsufuru, J.Noaki, T.Onogi, E.Shintani, N.Yamada [JLQCD and TWQCD collaborations], "Pion form factors from two-flavor lattice QCD with exact chiral symmetry," Physical Review D80, 034508 (2009).

E. Shintani, S. Aoki, T.W. Chiu, S. Hashimoto, T.H. Hsieh, T. Kaneko, H. Matsufuru, J. Noaki, T. Onogi, N. Yamada [JLQCD and TWQCD collaborations], “Lattice calculation of strong coupling constant from vacuum polarization functions,” Physical Review D82, 074505 (2009).

H. Ohki, H. Fukaya, S. Hashimoto, T. Kaneko, H. Matsufuru, J. Noaki, T. Onogi, E. Shintani, N. Yamada [JLQCD collaboration], “Nucleon sigma term and strange quark content from lattice QCD with exact chiral symmetry,” Physical Review D78, 054502 (2008).

E. Shintani, S. Aoki, H. Fukaya, S. Hashimoto, T. Kaneko, H. Matsufuru, T. Onogi, N. Yamada, “S-parameter and pseudo-Nambu-Goldstone boson mass from lattice QCD,” Physical Review Letters, 101, 242001 (2008).

J. Noaki, S. Aoki, T.W. Chiu, H. Fukaya, S. Hashimoto, T.H. Hsieh, T. Kaneko, H. Matsufuru, T. Onogi, E. Shintani, N. Yamada, “Convergence of the chiral expansion in two-flavor QCD,” Physical Review Letters, 101, 202004 (2008).

S. Aoki, H. Fukaya, S. Hashimoto, K.-I. Ishikawa, K. Kanaya, T. Kaneko, H. Matsufuru, M. Okamoto, M. Okawa, T. Onogi, A. Ukawa, N. Yamada, T. Yoshie, “Two-flavor QCD simulation with exact chiral symmetry,” Physical Review D78, 014508 (2008).

S. Aoki, T.W. Chiu, H. Fukaya, S. Hashimoto, T.H. Hsieh, T. Kaneko, H. Matsufuru, J. Noaki, K. Ogawa, T. Onogi, N. Yamada, “Topological susceptibility in two-flavor lattice QCD with exact chiral symmetry,” Physics Letters B665, 294-297 (2008).

S. Aoki, H. Fukaya, S. Hashimoto, J. Noaki, T. Kaneko, H. Matsufuru, T. Onogi, N. Yamada [JLQCD collaboration], “B_K with two flavors of dynamical overlap fermions,” Physical Review D77, 094503 (2008).

H. Fukaya, S. Aoki, S. Hashimoto, T. Kaneko, H. Matsufuru, J. Noaki, K. Ogawa, T. Onogi, N. Yamada [JLQCD collaboration], “Lattice study of meson correlators in the epsilon-regime of two-flavor QCD,” Physical Review D77, 074503 (2008).

S. Aoki, H. Fukaya, S. Hashimoto, T. Onogi, “Finite volume QCD at fixed topological charge,” Physical Review D76, 054508 (2007).

H. Fukaya, S. Aoki, T.W. Chiu, S. Hashimoto, T. Kaneko, H. Matsufuru, J. Noaki, K. Ogawa, T. Onogi, N. Yamada [JLQCD collaboration], “Two-flavor lattice QCD in the epsilon-regime and chiral random matrix theory,” Physical Review D76, 054503 (2007).

H. Fukaya, S. Aoki, T.W. Chiu, S. Hashimoto, T. Kaneko, H. Matsufuru, J. Noaki, K. Ogawa, M. Okamoto, T. Onogi, N. Yamada [JLQCD collaboration], “Two-flavor lattice QCD simulation in the epsilon-regime with exact chiral symmetry,” Physical Review Letters 98, 172001 (2007).

H. Fukaya, S. Hashimoto, K. Ishikawa, T. Kaneko, H. Matsufuru, T. Onogi, N. Yamada, “Lattice gauge action suppressing near-zero modes of HW,” Physical Review D74, 094505 (2006).

H. Fukaya, S. Hashimoto, T. Hirohashi, K. Ogawa, T. Onogi, “Topology conserving gauge action and the overlap-Dirac operator,” Physical Review D73, 014503 (2006).

K. Ogawa, S. Hashimoto, “Effect of low-lying fermion modes in the epsilon-regime of QCD,” Progress of Theoretical Physics 114, 609-629 (2005).

H. Fukaya, S. Hashimoto, K. Ogawa, “Low-lying mode contribution to the quenched meson correlators in the ε-regime,” Progress of Theoretical Physics 114, 451-476 (2005).

S. Hashimoto, “Recent results from lattice calculations,” International Journal of Modern Physics A20, 5133-5144 (2005).

S. Aoki, M. Fukugita, S. Hashimoto, K. Ishikawa, N. Ishizuka, Y. Iwasaki, K. Kanaya, T. Kaneko, Y. Kuramashi, M. Okawa, N. Tsutsui, A. Ukawa, N. Yamada, T. Yoshie [JLQCD collaboration], “Bulk first-order phase transition in three-flavor lattice QCD with O(a)-improved Wilson fermion action at zero temperature,” Physical Review D72, 054510 (2005).

S. Hashimoto, T. Onogi, “Heavy quarks on the lattice,” Annual Review of Nuclear and Particle Sciences 54, 451-486 (2004).

S. Aoki, M. Fukugita, S. Hashimoto, K. Ishikawa, N. Ishizuka, Y. Iwasaki, K. Kanaya, T. Kaneko, Y. Kuramashi, M. Okawa, T. Onogi, N. Tsutsui, A. Ukawa, N. Yamada, T. Yoshie [JLQCD collaboration], “B0-B0bar mixing in unquenched lattice QCD,” Physical Review Letters 91, 212001 (2003).

S. Hashimoto, A.S. Kronfeld, P.B. Mackenzie, S.M. Ryan, J.N. Simone, “Lattice calculation of the zero recoil form-factor of B→D*lnu: toward a model independent determination of |Vcb|,” Physical Review D66, 014503 (2002).

S. Aoki, M. Fukugita, S. Hashimoto, K. Ishikawa, N. Ishizuka, Y. Iwasaki, K. Kanaya, T. Kaneko, Y. Kuramashi, M. Okawa, T. Onogi, S. Tominaga, N. Tsutsui, A. Ukawa, N. Yamada, T. Yoshie [JLQCD collaboration], “Differential decay rate of B→pi lnu semileptonic decay with lattice NRQCD,” Physical Review D64, 114505 (2001).

S. Hashimoto, A.X. El-Khadra, A.S. Kronfeld, P.B. Mackenzie, S.M. Ryan, J.N. Simone, “Lattice QCD calculation of B→D lnu decay form-factors at zero recoil,” Physical Review D61, 014502 (2000).

K. Ishikawa, N. Yamada, S. Aoki, M. Fukugita, S. Hashimoto, N. Ishizuka, Y. Iwasaki, K. Kanaya, T. Kaneda, S. Kaya, Y. Kuramashi, H. Matsufuru, M. Okawa, T. Onogi, S. Tominaga, N. Tsutsui, A. Ukawa, T. Yoshie [JLQCD collaboration], “B meson leptonic decay constant with quenched lattice NRQCD,” Physical Review D61, 074501 (2000).

S. Aoki, M. Fukugita, S. Hashimoto, N. Ishizuka, Y. Iwasaki, K. Kanaya, Y. Kuramashi, M. Okawa, A. Ukawa, T. Yoshie [JLQCD collaboration], “Heavy meson decay constants from quenched lattice QCD,” Physical Review Letters 80, 5711-5715 (1998).

S. Aoki, M. Fukugita, S. Hashimoto, N. Ishizuka, H. Mino, M. Okawa, T. Onogi, A. Ukawa, “Manifestation of sea quark effects in the strong coupling constant in lattice QCD,” Physical Review Letters 74, 22-25 (1995).

S. Hashimoto, J. Kodaira, Y. Yasui, K. Sasaki, “The background field method: alternative way of deriving the pinch technique’s results,” Physical Review D50, 7066-7076 (1994).

S. Hashimoto, “Computation of the heavy-light decay constant using non-relativistic lattice QCD,” Physical Review D50, 4639-4648 (1994).

◎その他

その他の解説など
橋本省二「物質の起源と量子色力学計算」、数理科学 2020年3月。
「質量はどのように生まれるのか」、講談社ブルーバックス、2010年4月。
橋本省二「格子QCD計算で対称性の自発的破れを調べる」、原子核研究 (2009)。
深谷英則、橋本省二「量子色力学におけるカイラル対称性の破れの数値的検証」、日本物理学会誌、2008年4月。

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