Two-band Bose-Hubbard model for many-body resonant tunneling in the Wannier-Stark system
Two-band Bose-Hubbard model for many-body resonant tunneling in the Wannier-Stark system
We study an experimentally realizable paradigm of complex many-body quantum systems, a two-band Wannier-Stark model, for which diffusion in Hilbert space as well as many-body Landau-Zener processes can be engineered. A cross-over between regular to quantum chaotic spectra is found within the many-body avoided crossings at resonant tunneling conditions. The …