137 citations · 587 across the 13 of their papers we have counts for
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Path-Integral Renormalization Group Method for Numerical Study on Ground States of Strongly Correlated Electronic Systems
Tsuyoshi Kashima, Masatoshi Imada
A new efficient numerical algorithm for interacting fermion systems is proposed and examined in detail. The ground state is expressed approximately by a linear combination of numer…
Magnetic and Metal-Insulator Transitions through Bandwidth Control in Two-Dimensional Hubbard Models with Nearest and Next-Nearest Neighbor Transfers
Tsuyoshi Kashima, Masatoshi Imada
Numerical studies on Mott transitions caused by the control of the ratio between bandwidth and electron-electron interaction () are reported. By using the recently proposed path…
Superconductivity Driven by the Interband Coulomb Interaction and Implications for the Superconducting Mechanism of MgB2
Masatoshi Imada
Superconducting mechanism mediated by interband exchange Coulomb repulsion is examined in an extended two-band Hubbard models with a wide band crossing the Fermi level and coexisti…
Magnetic and Orbital States and Their Phase Transition of the Perovskite-Type Ti Oxides: Strong Coupling Approach
Masahito Mochizuki, Masatoshi Imada
The properties and mechanism of the magnetic phase transition of the perovskite-type Ti oxides, which is driven by the Ti-O-Ti bond angle distortion, are studied theoretically by u…