"Ryu Shinzaki,Joji Nasu,Akihisa Koga","Cluster Size Effects on Electronic Reconstruction in Quasiperiodic System",,"Journal of Physics: Conference Series",,"Vol. 809",,"pp. 012022-1-4",2017,Mar. "Sakai, Shiro,Takemori, Nayuta,Koga, Akihisa,Arita, Ryotaro,Akihisa Koga","Superconductivity on a quasiperiodic lattice: Extended-to-localized crossover of Cooper pairs",,"Physical Review B",,"Vol. 95","No. 2",,2017, "Koga, Akihisa,Yanatori, Hiromasa,Akihisa Koga","Spontaneously Symmetry-Breaking States in the Attractive SU(N) Hubbard Model",,"Journal of the Physical Society of Japan",,"Vol. 86","No. 3",,2017, "Koga, Akihisa,Tsunetsugu, Hirokazu,Akihisa Koga","Antiferromagnetic order in the Hubbard model on the Penrose lattice",,"Physical Review B",,"Vol. 96","No. 21",,2017,