A perturbative model is studied for the tunneling of many-particle states from the ground band to the first excited energy band, mimicking Landau-Zener decay for ultracold, spinless atoms in quasi-one-dimensional optical lattices subjected to a tunable tilting force. The distributions of the computed tunneling rates provide an independent and experimentally accessible signature of the regular-chaotic transition in the strongly correlated many-body dynamics of the ground band.
|Autori:||Tomadin Andrea; Mannella R; Wimberger Sandro|
|Titolo:||Many-body interband tunneling as a witness of complex dynamics in the Bose-Hubbard model|
|Anno del prodotto:||2007|
|Digital Object Identifier (DOI):||10.1103/PhysRevLett.98.130402|
|Appare nelle tipologie:||1.1 Articolo in rivista|