71 citations · 569 across the 61 of their papers we have counts for
61 papers
Longitudinal-field fidelity susceptibility analysis of the - transverse-field Ising model around
Yoshihiro Nishiyama
The square-lattice - transverse-field (TF) Ising model was investigated with the exact diagonalization (ED) method. In order to analyze the TF-driven phase transition, we…
Two-dimensional transverse-field model with the in-plane anisotropy and Dzyaloshinskii-Moriya interaction: Anisotropy-driven transition
Yoshihiro Nishiyama
The two-dimensional (2D) quantum spin- model with the transverse-field , in-plane-anisotropy , and Dzyaloshinskii-Moriya (DM) interactions was investigated by…
-VBS phase boundary for the square-lattice - model with the ring exchange
Yoshihiro Nishiyama
The square-lattice - model with the ring-exchange interaction was investigated numerically. As for the hard-core-boson model with the nearest-neighbor hopping $…
Transverse-field spin chain with the competing long-range interactions: Multi-criticality around the -symmetric point
Yoshihiro Nishiyama
The transverse-field spin chain with competing antiferromagnetic long-range interactions, (: distance between spins), and the exponent was investiga…
Criticality of the excess energy cost due to the unit-flux-quantum external field for the D superfluid-insulator transition
Yoshihiro Nishiyama
The two-dimensional (D) spin- model was investigated numerically as a realization of the D superfluid-Mott-insulator (SF-MI) transition. The interaction paramet…
Fidelity-mediated analysis of the transverse-field chain with the long-range interactions: Anisotropy-driven multi-criticality
Yoshihiro Nishiyama
The transverse-field chain with the long-range interactions was investigated by means of the exact-diagonalization method. The algebraic decay rate of the long-range inter…