4 citations · 4 across the 2 of their papers we have counts for
5 papers
Quantum-Classical Transition in Dissipative Double-Well Systems --A Numerical Study by a New Monte Carlo Scheme--
Takeshi Matsuo, Yuhei Natsume, Takeo Kato
Thermodynamics of dissipative quantum systems with double-well potentials is studied by the path-integral Monte Carlo (PIMC) method without truncation to the two-state model. For e…
A model for conservative chaos constructed from multi-component Bose-Einstein condensates with a trap in 2 dimensions
Hisatsugu Yamasaki, Yuhei Natsume, Katsuhiro Nakamura
To show a mechanism leading to the breakdown of a particle picture for the multi-component Bose-Einstein condensates(BECs) with a harmonic trap in high dimensions, we investigate t…
Frustrated quantum-spin system on a triangle coupled with lattice vibrations - Correspondence to Longuet-Higgins et al.'s Jahn-Teller model -
Hisatsugu Yamasaki, Yuhei Natsume, Akira Terai +1
We investigate the quantum three spin model of spin on a triangle, in which spins are coupled with lattice-vibrational modes through the exc…
Chaos-induced breaking of the Franck-Condon approximation
Hisatsugu Yamasaki, Yuhei Natsume, Akira Terai +1
We investigate the vibrational structure of electronic spectra for the transition from the non-degenerate state to states in Jahn-Teller systems with the t…
Chaos and its quantization in dynamical Jahn-Teller systems
Hisatsugu Yamasaki, Yuhei Natsume, Akira Terai +1
We investigate the Jahn-Teller system for the purpose to reveal the nature of quantum chaos in crystals. This system simulates the interaction between the nuclear…