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Theory Group
Larry MCLERRAN
Group Leader
Larry MCLERRAN (Ph.D.)
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Research Areas

The RIKEN BNL Research Center was established in April 1997 at Brookhaven National Laboratory in New York, USA. The Center is dedicated to study of strong interactions, including hard QCD/spin physics, lattice QCD and RHIC physics through nurturing of a new generation of young physicist. The theory group consists of three sub groups: numerical lattice QCD, perturbative QCD and phenomenological QCD. In JFY2004, the numerical lattice QCD group built a 10 TFlops QCDOC parallel supercomputer dedicated for the first-principle non-perturbative calculations of QCD. It pioneered the use of the domain-wall fermion method in QCD and we investigate various hadron physics including an important calculation of neutral Kaon CP-violations that is relevant for checking the Cabibbo-Kobayashi-Maskawa theory.Installation of a 200 teraflop (peak) successor to the QCDOC computer, QCDCQ (QCD with Chiral Quarks) is in preparation. The perturbative QCD group has developed various new methods required for studying hadron structures, especially in spin physics research. The phenomenological QCD group has pioneered the researches of color superconductivity, isospin density, and small-x phenomena in extreme hadronic matters.

Research Subject

  1. Lattice QCD numerical research
  2. Perturbative QCD
  3. Phenomenological QCD

Related links

  1. RIKEN Nishina Center for Accelerator-Based Science Website_Laboratories PageNew Window
  2. RIKEN BNL Research Center PageNew Window

RIKEN RESEARCH

August 21, 2009
Netting new physics from a stellar collapse
Failed supernovae could provide a strong flux of neutrinos near the detection limit of current observatories New Window
September 26,2008
A four-dimensional picture of our three-dimensional world
Scientists use a theory that exists in higher dimensions to better understand the process by which a neutron decays into a proton New Window
June 06,2008
Anti-matter of fact?
The theories that distinguish matter from anti-matter are surviving new tests in highly accurate supercomputer simulations New Window
March 07,2008
Bound quarks loosen up
October 12,2007
Don't get too close
A new approach proves that the nuclear force is strongly repulsive at close distances New Window

List of Selected Publications

  1. T. Yamazaki et al.:
    "Nucleon axial charge in 2+1 flavor dynamical lattice QCD with domain wall fermions"
    Phys. Rev. Lett. 100:171602, 2008.
  2. Thomas Blum, Takumi Doi, Masashi Hayakawa, Taku Izubuchi, Norikazu Yamada,:
    "Determination of light quark masses from the electromagnetic splitting of pseudoscalar meson masses computed with two flavors of domain wall fermions"
    Phys.Rev.D76:114508,2007.
  3. N. Brambilla, J. Ghiglieri, P. Petreczky, and A. Vairo,:
    "Static quark anti-quark pairs at finite temperature"
    Phys. Rev. D78: 014017, 2008.
  4. IKenji Fukushima, Francois Gelis, Larry McLerran,:
    "Initial Singularity of the Little Bang"
    Nucl.Phys.A786:107-130,2007.
  5. Noriyoshi Ishii, Sinya Aoki, Tetsuo Hatsuda,:
    "The Nuclear Force from Lattice QCD"
    Phys.Rev.Lett.99:022001,2007.
  6. Y. Aoki et al.:
    "The QCD transition temperature: results with physical masses in the continuum limit II"
    JHEP 0906:088,2009.
  7. M. Cheng et al.:
    "The QCD Equation of State with almost Physical Quark Masses"
    Phys. Rev. D77: 014511, 2008.
  8. Philipp Gubler, Daisuke Jido, Toru Kojo, Tetsuo Nishikawa, Makoto Okal:
    "Possible quantum numbers of the pentaquark θ+(1540) in QCD sum rules"
    Phys.Rev.D80:114030,2009.
  9. D.J. Antonio, et al.:
    "Neutral kaon mixing from 2+1 flavor domain wall QCD"
    Phys.Rev.Lett.100:032001,2008.
  10. C. Allton et al.:
    "Physical Results from 2+1 Flavor Domain Wall QCD and SU(2) Chiral Perturbation Theory"
    Phys. Rev. D78: 114509, 2008.
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