Centers & Labs

RIKEN Nishina Center for Accelerator-Based Science

Strangeness Nuclear Physics Laboratory

Chief Scientist: Emiko Hiyama (D.Sci.)
Emiko  Hiyama(D.Sci.)

In our laboratory, we are applying accurate few-body problem calulational method to various fields such as hypernuclear physics, unstable nuclear physics and hadron physics. As a result, we are getting new understanding by solving three- and four-body problem accurately. Especially, we are researching hypernuclear physics. The hypernucleus is composed of a hyperon, neutrons and protons. The research purpose in our laboratory is to understand interaction between hyperon and nucleon in unified way by studying the structure of the hypernuclei from the view points of three- and four-body problems.

Main Research Field


Research Subjects

  • Study of structure of nuclei with strangeness quark from the view points of few-body problem
  • Ultra cold atom
  • EOS of neutron star including freedom of strangeness
  • Clustering structure for 12C and 16O

Selected Publications

  1. M. Isaka, K. Fukukawa, M. Kimura, E. Hiyama, H. Sagawa, and Y. Yamamoto:
    "Superdeformed Λ hypernuclei with antisymmetrized molecular dynamics"
    Physical Review C 89, 024310 (2014)
  2. T. Suhara, Y. Funaki (parallel contribution), B. Zhou, H. Horiuchi, and A. Tohsaki:
    "One-Dimensional α Condensation of α-Linear-Chain States in 12C and 16O"
    Physical Review Letters, 112, 062501 (2014) 5 pages
  3. E. Hiyama and M. Kamimura:
    "Linear correlations between 4He trimer and tetramer energies calculated with various realistic 4He potentials"
    Physical Review A85, 062505 (2012)
  4. Naoyuki Sakumichi, Norio Kawakami and Masahito Ueda:
    "Criteria of off-diagonal long-range order in Bose and Fermi systems based on the Lee-Yang cluster expansion method"
    Physical Review A 85, 043601 (2012)
  5. E. Hiyama:
    "Gaussian expansion method for few-body systems and its applications to atomic and nuclear physics"
    Progress of Theoretical and Experimental Physics, Special Issue, Volume 2012, Issue 1, 01A204
  6. E. Hiyama and M. Kamimura:
    "Variational calculation of 4He tetramer ground and excited states using a realistic pair potential"
    Physical Review A85, 022502 (2012)
  7. E. Hiyama:
    "Few-Body Aspect of Hypernuclear Physics"
    Few-Body Systems 53, 189-236 (2012)
  8. Philipp Gubler, Kenji Morita and Makoto Oka:
    "Charmonium spectra at finite temperature from QCD sum rules with the maximum entropy method"
    Physical Review Letters 107, 092003 (2011)
  9. E. Hiyama, M. Kamimura, Y. Yamamoto, and T. Motoba:
    "Five-body cluster structure of the double-Λ hypernucleus ΛΛ11Be"
    Phys. Rev. Lett. 104, 212502 (2010)
  10. E. Hiyama and T. Yamada:
    "Structure of Light Hypernuclei"
    Progress in Particle and Nuclear Physics 63, 339-395 (2009)

Lab Members

Principal Investigator

Emiko Hiyama
Chief Scientist

Core Members

Hiroya Suno
Research Scientist
Hajime Togashi
Special Postdoctoral Researcher
Shin Watanabe
Special Postdoctoral Researcher
Tetsuya Yoshida
Junior Research Associate

Contact information

2-1 Hirosawa,
Wako, Saitama
351-0198, Japan

Email: hiyama [at]

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