35 citations · 54 across the 3 of their papers we have counts for
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Quantum Fluctuations of Chirality in One-Dimensional Spin-1/2 Multiferroics: Gapless Dielectric Response from Phasons and Chiral Solitons
Shunsuke Furukawa, Masahiro Sato, Yasuhiro Saiga +1
We present a quantum theory for one-dimensional spin-1/2 multiferroics, where the vector spin chirality couples with the electric polarization. Based on exact diagonalization and b…
Exact spin dynamics of the 1/r^2 supersymmetric t-J model in a magnetic field
Mitsuhiro Arikawa, Yasuhiro Saiga
The dynamical spin structure factor S^{zz}(Q,omega) in the small momentum region is derived analytically for the one-dimensional supersymmetric t-J model with 1/r^2 interaction. St…
Saturated Ferromagnetism from Statistical Transmutation in Two Dimensions
Yasuhiro Saiga, Masaki Oshikawa
The total spin of the ground state is calculated in the U -> infinity Hubbard model with uniform magnetic flux perpendicular to a square lattice, in the absence of Zeeman coupling.…
Coexistence of d_{x^2-y^2}-Wave Superconductivity and Antiferromagnetism Induced by a Staggered Field
Yasuhiro Saiga, Masaki Oshikawa
The two-dimensional t-J model in a staggered field is studied by exact diagonalization of small clusters. For the low-hole-density region and a realistic value of J/t, it is found…