3 papers
cond-mat.str-el2026
Angular-time evolution and edge-spin dynamics in the Haldane phase of the S=1 bilinear-biquadratic chain
Takuma Kaise, Kouichi Okunishi
We investigate the angular-time evolution -- a parameter-time evolution generated by the entanglement Hamiltonian -- for the bipartitioned ground state of the S=1 bilinear-biquadra…
cond-mat.stat-mech2025
Visualization of Entanglement Geometry by Structural Optimization of Tree Tensor Network
Toshiya Hikihara, Hiroshi Ueda, Kouichi Okunishi +2
In tensor-network analysis of quantum many-body systems, it is of crucial importance to employ a tensor network with a spatial structure suitable for representing the state of inte…
cond-mat.str-el2025
Translational Symmetry Broken Magnetization Plateau of the Anisotropic Spin Ladder with Ferromagnetic Rung Interaction
Tôru Sakai, Koki Doi, Kiyomi Okamoto +5
The magnetization process of the anisotropic spin ladder with the ferromagnetic rung interaction is investigated using the numerical diagonalization of finite-size clusters…