YAMAGUCHI, Yoshiyuki

Assistant Professor

Department of Applied Mathematics and Physics
Graduate School of Informatics
Kyoto University
Kyoto 606-8501, Japan

Office: SOUGOU-KENKYU Bld. #10, Room #307

Areas of Interest:

• Dynamical Theory of Hamiltonian Systems with Many Degrees of Freedom
• Renormalization Group Method in Differential Equations

Representative Publications:

• 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.

Academic Society: Physical Society of Japan

Courses

• Undergraduate Courses:
  Execise, Seminar

Further Informations:

• My homepage
• Laboratory of Dynamical Theory
• Department of Applied Mathematics and Physics