Quantum chaos in the Bose-Hubbard model

A. R Kolovsky, A Buchleitner
2004 Europhysics letters  
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.
doi:10.1209/epl/i2004-10265-7 fatcat:66mi7xk3tzc2znbnkgg554j27q