95 citations · 406 across the 9 of their papers we have counts for
3 papers · 1 filter
Universal Asymptotic Eigenvalue Distribution of Density Matrices and the Corner Transfer Matrices in the Thermodynamic Limit
Kouichi Okunishi, Yasuhiro Hieida, Yasuhiro Akutsu
We study the asymptotic behavior of the eigenvalue distribution of the Baxter's corner transfer matrix (CTM) and the density matrix (DM) in the White's density-matrix renormalizati…
Delta-Function Bose Gas Picture of S=1 Antiferromagnetic Quantum Spin Chains Near Critical Fields
Kouichi Okunishi, Yasuhiro Hieida, Yasuhiro Akutsu
We study the zero-temperature magnetization curve (M-H curve) of the S=1 bilinear-biquadratic spin chain, whose Hamiltonian is given by $H=\sum_{i} S_i S_{i+1}+β(S_iS_{i+1})^2 with…
A Density Matrix Algorithm for 3D Classical Models
Tomotoshi Nishino, Kouichi Okunishi
We generalize the corner transfer matrix renormalization group, which consists of White's density matrix algorithm and Baxter's method of the corner transfer matrix, to three dimen…