KOMA Yoshiaki

J-GLOBAL         Last updated: Dec 14, 2016 at 10:11
 
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Name
KOMA Yoshiaki
Affiliation
Numazu College of Technology

Academic & Professional Experience

 
Aug 2006
 - 
Mar 2007
Institut fuer Kernphysik, Johannes Gutenberg-Universitaet Mainz
 
Nov 2004
 - 
Aug 2006
Deutsches Elektronen-Synchrotron DESY, Hamburg
 
Sep 2002
 - 
Oct 2004
Max-Planck-Institut fuer Physik, Muenchen
 

Awards & Honors

 
Sep 2010
Spin-dependent Potentials from lattice QCD, Particle Physics Medal: Young Scientist Award in Theoretical Particle Physics
 

Published Papers

 
Yoshiaki Koma, Miho Koma
PoS(Lattice 2012) 140      Nov 2012
The charmonium and bottomonium mass spectra are investigated in potential
nonrelativistic QCD (pNRQCD) with the heavy quark potential computed by lattice
QCD simulations. The potential consists of a static potential and relativistic
corrections cl...
KOMA Yoshiaki, KOMA Miho
Progress of theoretical physics. Supplement   (186) 205-210   Dec 2010
The heavy quark potential including relativistic corrections is investigated by using lattice QCD simulations within the quenched approximation, which is a relevant ingredient of an effective field theory for heavy quarkonium called potential nonr...
Yoshiaki Koma, Ernst-Michael Ilgenfritz, Karl Koller, Miho Koma, Gerrit Schierholz, Thomas Streuer, Volker Weinberg
PoS Lattice2010:278,2010      Dec 2010
Knowledge of the derivative of the topological susceptibility at zero
momentum is important for assessing the validity of the Witten-Veneziano
formula for the eta' mass, and likewise for the resolution of the EMC proton
spin problem. We investigat...
Yoshiaki Koma, Miho Koma
PoS LAT2009:122,2009      Nov 2009
The relativistic corrections to the static potential, i.e. the O(1/m)
correction, the O(1/m^2) spin-dependent and momentum-dependent corrections are
investigated in SU(3) lattice gauge theory. These corrections are relevant
ingredients of an effec...
T. Suzuki, M. Hasegawa, K. Ishiguro, Y. Koma, T. Sekido
Phys.Rev.D80:054504,2009      Jul 2009
The mechanism of non-Abelian color confinement is studied in SU(2) lattice
gauge theory in terms of the Abelian fields and monopoles extracted from
non-Abelian link variables without adopting gauge fixing.
Firstly, the static quark-antiquark pot...

Misc

 
Yoshiaki KOMA
Memoirs of Numazu College of Technology   50 101-104   Jan 2016
The dual Ginzburg-Landau (DGL) theory is one of the nonperturbative effective theories of quantumchromodynamics for strong interaction. We present a numerical method for solving the fieldequations in the DGL theory and demonstrate a beneficial eff...
Yoshiaki KOMA
Memoirs of Numazu College of Technology   49 71-74   Jan 2015
We present results of the static three-quark potential in SU(3) lattice gauge theory at zero temperature extracted from the Polyakov loop correlation function by employing the multilevel algorithm. We investigate various cases that the three quark...
Yoshiaki KOMA
Memoirs of Numazu College of Technology   48 247-250   Mar 2014
We perform an extensive test of the multilevel algorithm for computing the heavy quark potentialin lattice QCD simulations with the Polyakov loop correlation function (PLCF) constructed from theselected intermediate states of gluons. While the use...
KOMA Yoshiaki
Memoirs of Numazu College of Technology   47 389-392   Jan 2013
The heavy quarkonium mass spectra are investigated in potential nonrelativistic QCD with theheavy quark potential computed by lattice QCD simulations nonperturbatively. The potentialconsists of a static po七entialand relativistic correc七ionsclassif...
Koma Yoshiaki, Koma Miho
日本物理學會誌   67(5) 325-332   May 2012
Rich experimental data on heavy quarkonium states have been accumulated so far including not only conventional quark-antiquark bound states but also exotic states. Quantum chromodynamics (QCD) should provide us with a systematic understanding for ...

Conference Activities & Talks

 
Koma Miho, Koma Yoshiaki
日本物理学会講演概要集   21 Mar 2015   
Koma Yoshiaki, Koma Miho
日本物理学会講演概要集   21 Mar 2015   
Koma Yoshiaki, Koma Miho
Meeting abstracts of the Physical Society of Japan   5 Mar 2014   
Koma Miho, Koma Yoshiaki
Meeting abstracts of the Physical Society of Japan   5 Mar 2014   
Koma Y., Koma M.
Meeting abstracts of the Physical Society of Japan   5 Mar 2012