76 citations · 124 across the 6 of their papers we have counts for
6 papers
Rare transition event with self-consistent theory of large-amplitude collective motion
Kyosuke Tsumura, Yoshitaka Maeda, Hiroyuki Watanabe
A numerical simulation method, based on Dang et al.'s self-consistent theory of large-amplitude collective motion, for rare transition events is presented. The method provides a on…
Electron spin resonance shifts in S=1 antiferromagnetic chains
Shunsuke C. Furuya, Yoshitaka Maeda, Masaki Oshikawa
We discuss electron spin resonance (ESR) shifts in spin-1 Heisenberg antiferromagnetic chains with a weak single-ion anisotropy based on several effective field theories, the O(3)…
Single-ion anisotropy in Haldane chains and form factor of the O(3) nonlinear sigma model
Shunsuke C. Furuya, Takafumi Suzuki, Shintaro Takayoshi +2
We consider spin-1 Haldane chains with single-ion anisotropy, which exists in known Haldane chain materials. We develop a perturbation theory in terms of anisotropy, where magnon-m…
Universal temperature dependence of the magnetization of gapped spin chains
Yoshitaka Maeda, Chisa Hotta, Masaki Oshikawa
Temperature dependence of the magnetization of the Haldane spin chain at finite magnetic field is analyzed systematically. Quantum Monte Carlo data indicates a clear minimum of mag…
Exact Analysis of ESR Shift in the Spin-1/2 Heisenberg Antiferromagnetic Chain
Y. Maeda, K. Sakai, M. Oshikawa
A systematic perturbation theory is developed for the ESR shift and is applied to the spin-1/2 Heisenberg chain. Using the Bethe ansatz technique, we exactly analyze the resonance…
Direct perturbation theory on the shift of Electron Spin Resonance
Yoshitaka Maeda, Masaki Oshikawa
We formulate a direct and systematic perturbation theory on the shift of the main paramagnetic peak in Electron Spin Resonance, and derive a general expression up to second order.…