14 citations · 18 across the 2 of their papers we have counts for
5 papers
Local-Ansatz Approach with Momentum Dependent Variational Parameters to Correlated Electron Systems
Y. Kakehashi, T. Shimabukuro, C. Yasuda
A new wavefunction which improves the Gutzwiller-type local ansatz method has been proposed to describe the correlated electron system. The ground-state energy, double occupation n…
Spin-Wave Theory of the Multiple-Spin Exchange Model on a Triangular Lattice in a Magnetic Field : 3-Sublattice Structures
Chitoshi Yasuda, Daisuke Kinouchi, Kenn Kubo
We study the spin wave in the S=1/2 multiple-spin exchange model on a triangular lattice in a magnetic field within the linear spin-wave theory. We take only two-, three- and four-…
Competition between Hidden Spin and Charge Orderings in Stripe Phase
Chitoshi Yasuda, Akihiro Tanaka, Xiao Hu
The correlation between charge and spin orderings in hole-doped antiferromagnets is studied within an effective model of quantum strings fluctuating in an antiferromagnetic backgro…
Neel Temperature of Quasi-Low-Dimensional Heisenberg Antiferromagnets
C. Yasuda, S. Todo, K. Hukushima +4
The Néel temperature, , of quasi-one- and quasi-two-dimensional antiferromagnetic Heisenberg models on a cubic lattice is calculated by Monte Carlo simulations as a func…
Quantum Phase Transitions of Quasi-One-Dimensional Heisenberg Antiferromagnets
Munehisa Matsumoto, Synge Todo, Chitoshi Yasuda +1
We study the ground-state phase transitions of quasi-one-dimensional quantum Heisenberg antiferromagnets by the quantum Monte Carlo method with the continuous-time loop algorithm a…