Eigenvalues of the hermitian Wilson-Dirac operator and chiral properties   of the domain-wall fermion
  Chiral properties of QCD formulated with the domain-wall fermion (DWQCD) are studied using the anomalous quark mass m_{5q} and the spectrum of the 4-dimensional Wilson-Dirac operator. Numerical simulations are made with the standard plaquette gauge action and a renormalization-group improved gauge action. Results are reported on the density of zero eigenvalue obtained with the accumulation method, and a comparison is made with the results for m_{5q}. 
CP-PACS Collaboration : A. Ali Khan, S. Aoki, Y. Aoki, R. Burkhalter,   S. Ejiri, M. Fukugita, S. Hashimoto, N. Ishizuka, Y....