Vacuum Structure of the Ichimatsu-Decomposed Lattice Models
  We proposed an `Ichimatsu'-decomposed lattice gauge theory with fermionic symmetries. The vacuum structures of the gauge sector with two coupling constants ($\beta_p,\beta_c$) are investigated for 3-dimensional Z$_2$ and 4-dimensional SU(2) cases using mean-field approximation and numerical simulation. We found two phases on the ($\beta_p,\beta_c$) phase diagram for 3-dim. Z$_2$ case, while the diagram is a single phase for the latter. 
K. Itoh (Niigata Univ.), M. Kato (Inst. of Physics, Univ. of Tokyo),   M. Murata (Niigata Univ.), H. Sawanaka (Niigata Univ....