山口 義幸 助教
京都大学大学院情報学研究科
数理工学専攻
〒606-8501 京都市左京区吉田本町
オフィス: 総合研究10号館３階３０７号室
平成２９年１月現在
研究活動
- 研究テーマ
- 多自由度ハミルトン力学系理論
- 力学系における繰り込み群の方法
- 最近の主要論文・著書
- Y.Y.Yamaguchi,
"Slow relaxation at critical point of second order phase transition
in a highly chaotic hamiltonian system",
Progress of Theoretical Physics (1996) 95, 717-31.
- Y.Y.Yamaguchi,
"Second order phase transition in a highly chaotic Hamiltonian system
with many degrees of freedom",
International Journal of Bifurcation and Chaos (1997) 7, 839-47.
- Y.Y.Yamaguchi,
"New universality of Lyapunov spectra in Hamiltonian systems",
Journal of Physics A (1998) 31, 195-207.
- Y.Y.Yamaguchi and T.Konishi,
"A geometrical model for stagnant motions in Hamiltonian systems
with many degrees of freedom",
Progress of Theoretical Physics (1998) 99, 139-44.
- Y.Y.Yamaguchi and Y.Nambu,
"Renormalization group equations and integrability in Hamiltonian systems",
Progress of Theoretical Physics (1998) 100, 199-204.
- Y.Nambu and Y.Y.Yamaguchi,
"Renormalization of the long-wavelength solution of Einstein equation"
Physical Review D (1999) 60, 104011.
- Y.Y.Yamaguchi and T.Iwai,
"Geometric Approach to Lyapunov Analysis in Hamiltonian Dynamics",
Physical Review E (2001) 64, 066206.
- Y.Y.Yamaguchi,
"Relaxation and Diffusion in a Globally Coupled Hamiltonian System",
Physical Review E (2003) 68, 066210.
- Y.Y.Yamaguchi, J.Barre', F.Bouchet, T.Dauxois and S.Ruffo,
"Stability criteria of the Vlasov equation and quasi-stationary states of the HMF model",
Physica A (2004) 337, 36-66.
- S.Goto and Y.Y.Yamaguchi,
"Non-universal finite size effects with universal infinite-size free energy",
Physica A (2005) 354, 312-322.
- J.Barre', F.Bouchet, T.Dauxois, S.Ruffo and Y.Y.Yamaguchi,
"The Vlasov equation and the Hamiltonian Mean-Field model",
Physica A (2006) 365, 177-183.
- Y.Y.Yamaguchi, F.Bouchet and T.Dauxois
"Algebraic correlation function and anomalous diffusion in the HMF model",
J.Stat.Mech. (2007) P01020.
- A.Antoniazzi, D.Fanelli, S.Ruffo and Y.Y.Yamaguchi,
"Nonequilibrium tricritical point in a system with long-range interactions",
Phys.Rev.Lett. (2007) 99, 040601.
- Y.Y.Yamaguchi,
"One-dimensional self-gravitating sheet model and Lynden-Bell statistics",
Phys.Rev.E (2008) 78, 041114.
- J.Barre' and Y.Y.Yamaguchi,
"Small traveling clusters in attractive and repulsive Hamiltonian mean-field models",
Phys.Rev.E (2009) 79, 036208.
- R.Bachelard, C.Chandre, A.Ciani, D.Fanelli and Y.Y.Yamaguchi,
"Analytical results on the magnetization of the Hamiltonian mean-field model",
Phys.Lett.A (2009) 373, 4239-4245.
- J.Barre', A.Olivetti and Y.Y.Yamaguchi,
"Dynamics of perturbations around inhomogeneous backgrounds in the HMF model",
J.Stat.Mech. (2010) P08002.
- Y.Y.Yamaguchi,
"Construction of traveling clusters in the Hamiltonian mean-field model by nonequilibrium statistical mechanics and Bernstein-Greene-Kruskal waves",
Phys.Rev.E (2011) 84, 016211.
- J.Barre', A.Olivetti and Y.Y.Yamaguchi,
"Algebraic damping in the one-dimensional Vlasov equation",
J.Phys.A (2011) 44, 405502.
- S.Ogawa and Y.Y.Yamaguchi,
"Precise determination of the nonequilibrium tricritical point based on Lynden-Bell theory in the Hamiltonian mean-field model",
Phys.Rev.E (2011) 84, 061140.
- S.Ogawa and Y.Y.Yamaguchi,
"Linear response theory in the Vlasov equation for homogeneous and for inhomogeneous quasistationary states",
Phys.Rev.E (2012) 85, 061115.
- P.De Buyl, G.De Ninno, D.Fanelli, C.Nardini, A.Patelli, F.Piazza and Y.Y.Yamaguchi,
"Absence of thermalization for systems with long-range interactions coupled to a thermal bath",
Phys.Rev.E (2013) 87, 042110.
- 研究助成金（平成11年度以降）
- 科研費奨励研究(A)
軌道不安定性による多自由度ハミルトン力学系の普遍的性質に関する研究
平成１２年度〜１３年度
- 文部科学省長期在外研究員(若手別枠)
軌道不安定性による相転移現象の解析
平成１４年度
- 科研費若手研究(B)
長距離相互作用ハミルトン系の非平衡ダイナミクス
平成１６年度〜１８年度
- 外国人招へい研究者(短期)(日本学術振興会)
長距離相互作用ハミルトン系のダイナミクス：凖定常状態の役割
平成１８年５月２２日〜６月２４日
- 科研費若手研究(B)
凖定常状態の統計力学とダイナミクス
平成１９年度〜２２年度
- 科研費基盤研究(C)
非相加系のダイナミクスと熱力学
平成２３年度〜２７年度
- 科研費基盤研究(C)
長距離相互作用系のダイナミクスと臨界現象および応用
平成２８年度〜３２年度
- 学位
- 所属学会
教育活動
- 担当授業科目（学部）
基礎数理演習、 数理工学セミナー
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Last modified: Wed Jan 11 19:44:29 JST 2017