1. Equilibrium and quasi-equilibrium state in long-range interacting systems (oral, English)
   Takayuki Tatekawa
   Slovenia-Japan AICS Mini-Symposium "Nonlinear Phenomena in Complex Systems" (2007.11, @ Waseda Univ.)

1. Primordial Fractal Density Fluctuation and Structure Formation of The Universe
   Takayuki Tatekawa and Kei-ichi Maeda
   The 4th RESCEU International Symposium (1999.11, @ Tokyo, Japan) (poster)

2. Primordial Fractal Density Perturbations and Structure Formation of The Universe: 1-dimensional collisionless sheet model
   Takayuki Tatekawa and Kei-ichi Maeda
   The Ninth Marcel Grossmann Meeting (2000.7,@ Rome, Italy) (oral)

3. Exploreing Jeans instability in Lagrangian perturbation theory
   Takayuki Tatekawa, Momoko Suda, Kei-ichi Maeda, Masaaki Morita, and Hiroki Anzai
   16th International Conference on General Relativity and Gravitation (2001.7, @ ICC Durban, South Africa) (oral)

4. Velocity dispersion and modification in Lagrangian theory of structure formation
   Takayuki Tatekawa
   XXI SYMPOSIUM ON RELATIVISTIC ASTROPHYSICS (2002.12, @ Firenze, Italy) (poster)

5. The Effect of Velocity Dispersion in Lagrangian Hydrodynamics for a Cosmological Fluid
   Takayuki Tatekawa
   The First Thai Physics and the Universe Symposium (2003.4, @ Phitsanulok, Thailand) (oral)

6. The Performance of Extended Lagrangian Perturbation theory
   Takayuki Tatekawa
   IAU 25th General Assembly (2003.7, @ Sydney, Australia) (poster)

7. The density field in extended Lagrangian perturbation theory
   Takayuki Tatekawa
   The 6th RESCEU International Symposium (2003.11, @ Univ. of Tokyo) (poster)

8. Self-similar solution and fractal structure in one-dimensional self-gravitating system with power-law expansion
   Takayuki Tatekawa and Kei-ichi Maeda
   22nd International Conference on Statistical Physics (STATPHYS 22)(2004.7, @ Bangalore, India) (poster)

9. Validity and Application of the Extended Lagrangian Perturbation Theory
   Takayuki Tatekawa
   22nd Texas Symposium on Relativistic Astrophysics (2004.12, @ Stanford Univ., USA) (poster)

10. Non-Gaussianity of one-point distribution functions in Euler-Jeans-Newton model
    Takayuki Tatekawa
    Yukawa International Seminar 2005 (YKIS2005): The Next Chapter in Einstein's Legacy (2005.7, @ YITP, Kyoto Univ.) (poster)

11. Thermodynamics of the self-gravitating ring model: Analyses with new iterative method
    Takayuki Tatekawa, Freddy Bouchet, Thierry Dauxois, and Stefano Ruffo
    The Third 21COE Symposium : Astrophysics as Interdisciplinary Science (2005.9, @ Waseda Univ.) (poster)

12. Lagrangian description for the cosmic fluid
    Takayuki Tatekawa
    Relativistic Astrophysics and Cosmology - Einstein's Legacy - (2005.11, @ Munich, Germany) (poster)

13. Phase transition in d-dimensional long-range interacting systems
    Takayuki Tatekawa
    Conference on Computational Physics 2006 (CCP2006) (2006.9, @ Gyeongju, Republic of Korea) (poster)

14. Improving of the Lagrangian Perturbative Solution for Structure Formation: Applying Shanks Tranformation
    Takayuki Tatekawa
    23th Texas Symposium on Relativistic Astrophysics (2006.12, @ Univ. of Melbourne, Australia) (poster)

15. Non-Gaussianity of the Density Distribution in Accelerating Universes
    Takayuki Tatekawa and Shuntaro Mizuno
    23th Texas Symposium on Relativistic Astrophysics (2006.12, @ Univ. of Melbourne, Australia) (poster)

16. Non-Gaussianity of the large-scale structure in the Universe: Applying cosmological N-body simulations
    Takayuki Tatekawa and Shuntaro Mizuno
    Conference on Computational Physics (CCP2007) (2007.9, @ Univ. Libre de Bruxelles, Belgium) (poster)

17. Initial condition problem for cosmological N-body simulations
    Takayuki Tatekawa and Shuntaro Mizuno
    Dark Energy and Dark Matter: Observations, Experiments and Theories (2008.7, @ Univ. Lyon 1, France) (poster)

18. Initial conditions based on Lagrangian perturbation theory for N-body simulations
    Takayuki Tatekawa and Shuntaro Mizuno
    The 7th RESCEU International Symposium (2008.11, @ Univ. of Tokyo) (poster)

19. Transient states in two-dimensional long-range interacting system
    Takayuki Tatekawa, Masa-aki Sakagami, Atsushi Taruya, Takashi Okamura, and Stefano Ruffo
    The XXIV International Conference on Statistical Physics of the International Union for Pure and Applied Physics (STATPHYS 24) (2010.7, @ Cairns, Australia) (poster)

20. Transient states in two-dimensional N-body systems
    Takayuki Tatekawa, Masa-aki Sakagami, Atsushi Taruya, Takashi Okamura, and Stefano Ruffo
    The 13th Slovenia-Japan seminar on nonlinear science and Waseda AICS symposium on nonlinear and nonequilibrium phenomena in complex systems (@ Waseda Univ., 2010.11) (poster)

21. Application of Lagrangian perturbation theory for precision cosmology
    Takayuki Tatekawa and Shuntaro Mizuno
    27th Texas Symposium on Relativistic Astrophysics (@ Dallas, USA, 2013.12) (poster)

22. Higher-order Lagrangian perturbative theory for the Cosmic Web
    Takayuki Tatekawa and Shuntaro Mizuno
    IAU Symposium 308: The Zeldovich Universe (@ Tallinn, Estonia, 2014.6) (poster)

23. The relation between order of phase transition and characteristic properties in SGR models
    Takayuki Tatekawa
    Waseda AICS Symposium and the 14th Slovenia-Japan Seminar: New Challenges in Complex Systems Science (@ Waseda Univ., 2014.10) (poster)

• Primordial Fractal Density Perturbations and Structure Formation of The Universe
  Takayuki Tatekawa and Kei-ichi Maeda
  The Physical Society of Japan annual meeting (1999.3, @ Hiroshima Univ.) (oral)

• Primordial Fractal Density Perturbations and Structure Formation of The Universe 2
  Takayuki Tatekawa and Kei-ichi Maeda
  The Physical Society of Japan annual meeting (1999.9, @ Shimane Univ.) (oral)

• Primordial Fractal Density Perturbations and Structure Formation of The Universe
  Takayuki Tatekawa and Kei-ichi Maeda
  Astronomical Society of Japan annual meeting in autumn (1999.10, @ Kyushu Univ.) (oral)

• Primordial Fractal Density Perturbations and Structure Formation of The Universe 3
  Takayuki Tatekawa and Kei-ichi Maeda
  The Physical Society of Japan annual meeting (2000.4, @ Kinki Univ.) (oral)

• Primordial fractal density perturbations and structure formation in the Universe : 1-Dimensional collisionless sheet model
  Takayuki Tatekawa and Kei-ichi Maeda
  Astronomical Society of Japan annual meeting in spring (2000.4, @ Univ. of Tokyo) (poster)

• Fractal structure formation in 1-Dimensional collisionless sheet model with cosmic expansion
  Takayuki Tatekawa and Kei-ichi Maeda
  The Physical Society of Japan annual meeting (2000.9, @ Niigata Univ.) (oral)

• Lagrangian approximation theory of structure formation and effect of pressure
  Takayuki Tatekawa, Momoko Suda, Kei-ichi Maeda, Masaaki Morita, and Hiroki Anzai
  Astronomical Society of Japan annual meeting in spring (2001.3, @ Univ. of Chiba) (oral)

• Fractal structure formation in 1-Dimensional sheet model and effect of expansion
  Takayuki Tatekawa and Kei-ichi Maeda
  Astronomical Society of Japan annual meeting in spring (2001.3, @ Univ. of Chiba) (poster)

• Perturbation theory in Lagrangian hydrodynamics for a cosmological fluid with velocity dispersion
  Takayuki Tatekawa, Masaaki Morita, Momoko Suda, Kei-ichi Maeda, and Hiroki Anzai
  The Physical Society of Japan annual meeting (2001.9, @ Okinawa Kokusai Univ.) (oral)

• The effect of inhomogeneity for cosmological parameters
  Takayuki Tatekawa and Kei-ichi Maeda
  Astronomical Society of Japan annual meeting in spring (2002.3, @ Mito Univ.) (poster)

• Lagrangian perturbation theory for structure formation and velocity dispersion
  Takayuki Tatekawa
  Astronomical Society of Japan annual meeting in spring (2003.3, @ Tohoku Univ.) (poster)

• The effect of isotropic velocity dispersion in Lagrangian perturbation theory for structure formation
  Takayuki Tatekawa
  The Physical Society of Japan annual meeting (2003.3, @ Tohoku Gakuin Univ.) (oral)

• Expansion law and fractal structure in one-dimensional self-gravitating system
  Takayuki Tatekawa and Kei-ichi Maeda
  The Physical Society of Japan annual meeting (2003.9, @ Okayama Univ.) (oral)

• Self-similar solution and fractal structure in one-dimensional self-gravitating system with power-law expansion
  Takayuki Tatekawa and Kei-ichi Maeda
  The Physical Society of Japan annual meeting (2004.3, @ Kyushu Univ.) (oral)

• Thermodynamics of self-gravitating ring model: Analyses of equilibrium state with new iterative method
  Takayuki Tatekawa, Freddy Bouchet, Thierry Dauxois, and Stefano Ruffo
  The Physical Society of Japan annual meeting (2005.9, @ Doshisha Univ.) (oral)

• Non-Gaussianity of one-point distribution functions in Lagrangian linear perturbation theory
  Takayuki Tatekawa
  Astronomical Society of Japan annual meeting in autumn (2005.10, @ Sapporo Convention Center) (poster)

• Improving of the Lagrangian perturbative solution for cosmic fluid: Applying Shanks transformation
  Takayuki Tatekawa
  The Physical Society of Japan annual meeting (2006.9, @ Nara Women's Univ.) (oral)

• Non-Gaussianity of the density distribution in accelerating universes
  Takayuki Tatekawa and Shuntaro Mizuno
  The Physical Society of Japan annual meeting (2007.3, @ Tokyo Metropolitan Univ.) (oral)

• Phase transition in generalized d-dimensional HMF models
  Takayuki Tatekawa and Stefano Ruffo
  The Physical Society of Japan annual meeting (2007.9, @ Hokkaido Univ.) (oral)

• Oscillation of IMBH and its effect for around objects
  Takayuki Tatekawa and Tohru Tashiro
  Astronomical Society of Japan annual meeting in spring (2008.3, @ National Olympics Memorial Youth Center) (poster)

• Evolution of N-body systems with IMBH and its properties
  Takayuki Tatekawa and Hajime Sotani
  Astronomical Society of Japan annual meeting in spring (2008.3, @ National Olympics Memorial Youth Center) (poster)

• Initial condition problem for cosmological N-body simulations based on Lagrangian perturbation theory
  Takayuki Tatekawa and Shuntaro Mizuno
  Astronomical Society of Japan annual meeting in autumn (2008.9, @ Okayama Univ. of Science) (poster)

• Thermal equilibrium state and dynamical evolution in 3-dimensional long-range interacting system
  Takayuki Tatekawa
  The Physical Society of Japan annual meeting (2009.3, @ Rikkyo Univ.) (Poster)

• Fourth-order Lagrangian perturbative equations and their solutions
  Takayuki Tatekawa
  Astronomical Society of Japan annual meeting in autumn (2012.9, @ Oita Univ.) (Poster)

• M-sigma relation in stellar cluster with massive black hole
  Takayuki Tatekawa, Tohru Tashiro, and Eri Kunisaki
  Astronomical Society of Japan annual meeting in spring (2013.3, @ Saitama Univ.) (Poster)

• Higher-order Lagrangian perturbative solutions for cosmic fluid
  Takayuki Tatekawa
  The Physical Society of Japan annual meeting (2013.3, @ Hiroshima Univ.) (Oral)

• Application of Lagrangian perturbation theory for precision cosmology
  Takayuki Tatekawa
  Astronomical Society of Japan annual meeting in autumn (2013.9, @ Tohoku Univ.) (Poster)

• Derivation of fifth-order perturbation of Lagrangian perturbation theory and construction of their fitting formulae
  Takayuki Tatekawa and Shuntaro Mizuno
  Astronomical Society of Japan annual meeting in autumn (2014.9, @ Yamagata Univ.) (Poster)

• Development of N-body simulation code for limited Post-Newtonian approximation
  Takayuki Tatekawa
  Astronomical Society of Japan annual meeting in spring (2017.3, @ Kyushu Univ.) (Poster)

• Acceleration of 1PN N-body simulation code with GPU
  Takayuki Tatekawa
  Astronomical Society of Japan annual meeting in autumn (2017.9, @ Hokkaido Univ.) (Poster)

• Effect of precision initial conditions for cosmological N-body simulations
  Takayuki Tatekawa
  Joint Conference on Applied Physics and Physics, Chugoku and Shikoku Branch (2017.9, @ Kochi Inst. Tech.) (Oral)

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