KEK Theory Center

NISHIMURA, Jun

NISHIMURA, Jun

Research subjects

I am studying superstring theory by the methods of numerical simulation in order to clarify the interior structure of black holes and the birth of our universe. In particular, I am trying to solve various puzzles concerning the big bang cosmology and the standard model of particle physics using a new method developed to study superstring theory nonperturbatively.

Educational Background

* April, 1986 – March, 1990
      Department of Physics, University of Tokyo.
      Degrees: B.Sc (Physics)
* April, 1990 – March, 1992
      Graduate School of Science, University of Tokyo.
      Degrees: M.Sc (Physics)
* April, 1992 – March, 1995
      Graduate School of Science, University of Tokyo.
      Degrees: D.Sc (Physics)

Research Careers

* 1 April, 1994 – 14 August, 1995
      National Laboratory for High Energy Physics (KEK),
      Research Fellow of the Japan Society for the Promotion of Science.
* 15 August, 1995 – 31 October, 1998
      Department of Physics, Nagoya University, Assistant Professor.
* 1 November, 1998 – 31 October, 2000
      Niels Bohr Institute, Postdoctoral Fellow (for Research Abroad)
      of the Japan Society for the Promotion of Science
* 1 November, 2000 – 31 October, 2001
      Niels Bohr Institute, Research Assistant Professor.
* 1 November, 2001 – 31 March, 2003
      Department of Physics, Nagoya University, Assistant Professor.
* 1 April, 2003 -
      High Energy Accelerator Research Organization (KEK), Associate Professor.

list of main publications

[1] M.Hanada, J.Nishimura, Y.Sekino and T.Yoneya,
“Monte Carlo studies of Matrix theory correlation functions,”
Physical Review Letters 104 (2010) 151601.

[2] M.Hanada, Y.Hyakutake, J.Nishimura and S.Takeuchi,
“Higher derivative corrections to black hole thermodynamics from
supersymmetric matrix quantum mechanics,”
Physical Review Letters 102 (2009) 191602.

[3] M.Hanada, A.Miwa, J.Nishimura and S.Takeuchi,
“Schwarzschild radius from Monte Carlo calculation of the Wilson loop
in supersymmetric matrix quantum mechanics,”　
Physical Review Letters 102 (2009) 181602.

[4] G.Ishiki, S.-W.Kim, J.Nishimura and A.Tsuchiya,
“Deconfinement phase transition in N=4 super Yang-Mills theory
on R×S3 from supersymmetric matrix quantum mechanics,”
Physical Review Letters 102 (2009) 111601.

[5] K.N.Anagnostopoulos, M.Hanada, J.Nishimura and S.Takeuchi,
“Monte Carlo studies of supersymmetric matrix quantum mechanics with
sixteen supercharges at finite temperature,”
Physical Review Letters 100 (2008) 021601.

[6] M.Hanada, J.Nishimura and S.Takeuchi,
“Non-lattice simulation for supersymmetric gauge theories in one
dimension,”
Physical Review Letters 99 (2007) 161602.

[7] T.Azuma, S.Bal, K.Nagao and J.Nishimura,
“Nonperturbative studies of fuzzy spheres in a matrix model
with the Chern-Simons term”,
Journal of High Energy Physics 0405 (2004) 005.

[8] J.Ambjorn, K.N.Anagnostopoulos, J.Nishimura and J.J.Verbaarschot,
“The factorization method for systems with a complex action:
A test in Random Matrix Theory for finite density QCD”,
Journal of High Energy Physics 0210 (2002) 062.

[9] J.Nishimura and F.Sugino,
“Dynamical generation of four-dimensional space-time
in the IIB matrix model”,
Journal of High Energy Physics 0205 (2002) 001.

[10] K.N.Anagnostopoulos and J.Nishimura,
“New approach to the complex-action problem and
its application to a nonperturbative study of superstring theory”,
Physical Review D 66 (2002) 106008.

[11] J.Nishimura and G.Vernizzi,
“Brane world generated dynamically from string type IIB matrices”,
Physical Review Letters 85 (2000) 4664.

[12] J.Ambjorn, K.N.Anagnostopoulos, W.Bietenholz, T.Hotta and
J.Nishimura,
“Monte Carlo studies of IIB matrix model at large N”,
Journal of High Energy Physics 0007 (2000) 011.

[13] J.Ambjorn, Y.M.Makeenko, J.Nishimura and R.J.Szabo,
“Lattice gauge fields and discrete noncommutative Yang-Mills theory”,
Journal of High Energy Physics 0005 (2000) 023.

[14] J.Ambjorn, K.N.Anagnostopoulos, W.Bietenholz, T.Hotta and
J.Nishimura,
“Large N dynamics of dimensionally reduced 4D SU(N)
super Yang-Mills theory”,　
Journal of High Energy Physics 0007 (2000) 013.