Chaotic and regular dynamics in the three-site Bose-Hubbard model
Quantum Gases
2020-07-15 v1
Abstract
We analyze the energy spectrum of the three-site Bose-Hubbard model. It is shown that this spectrum is a mixture of the regular and irregular spectra associated with the regular and chaotic components of the classical Bose-Hubbard model. We find relative volumes of these components by using the pseudoclassical approach. Substituting these values in the Berry-Robnik distribution for the level spacing statistics we obtain good agreement with the numerical data.
Keywords
Cite
@article{arxiv.1910.12489,
title = {Chaotic and regular dynamics in the three-site Bose-Hubbard model},
author = {A. A. Bychek and P. S. Muraev and D. N. Maksimov and A. R. Kolovsky},
journal= {arXiv preprint arXiv:1910.12489},
year = {2020}
}
Comments
8 pages, 6 figures