62 citations · 103 across the 4 of their papers we have counts for
5 papers
Reconstruction of Quantum Mechanics with Information Operators
Ken'ichi Takano
We reconstruct quantum mechanics by introducing "information operators" and excluding the concept of wave functions. Multiple information operators simultaneously describe a single…
Frustration Induced Quantum Phases in Mixed Spin Chain with Frustrated Side Chains
Kazuo Hida, Ken'ichi Takano
A mixed Heisenberg spin chain with frustrated side chains is investigated by numerical and perturbational calculations. A frustration-induced quantum partially polarized ferrimagne…
Disordered ground states in a quantum frustrated spin chain with side chains
Ken'ichi Takano, Kazuo Hida
We study a frustrated mixed spin chain with side chains, where the spin species and the exchange interactions are spatially varied. A nonlinear sigma model method is formulated for…
Nonlinear Sigma model method for the J1-J2 Heisenberg model: disordered ground state with plaquette symmetry
Ken'ichi Takano, Yoshiya Kito, Yoshiaki Ono +1
A novel nonlinear sigma model method is proposed for the two-dimensional J1-J2 model, which is extended to include plaquette-type distortion. The nonlinear sigma model is properly…
Determination of Exchange Parameters for CaV_4O_9
Ken'ichi Takano, K. Sano
Magnetic susceptibility measured for CaVO is analyzed by a method with high temperature expansion. The analysis is consistent with the -value which is close to 2 and is…