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.
Many-body interband tunneling as a witness of complex dynamics in the Bose-Hubbard model / A., Tomadin; R., Mannella; Wimberger, Sandro Marcel. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 98:13(2007), p. 130402. [10.1103/PhysRevLett.98.130402]
Many-body interband tunneling as a witness of complex dynamics in the Bose-Hubbard model.
WIMBERGER, Sandro Marcel
2007-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
