Quantum Chaos in the Bose-Hubbard model
arXiv:cond-mat/0403213 · doi:10.1209/epl/i2004-10265-7
Abstract
We present a numerical study of the spectral properties of the 1D Bose-Hubbard model. Unlike the 1D Hubbard model for fermions, this system is found to be non-integrable, and exhibits Wigner-Dyson spectral statistics under suitable conditions.
4 pages, 4 figures