A two-band Bose-Hubbard model is presented which is shown to be minimal in the necessary coupling terms at resonant tunneling conditions. The dynamics of the many-body problem is studied by sweeping the system across an avoided level crossing. The linear sweep generalizes Landau-Zener transitions from single-particle to many-body realizations. The temporal evolution of single-and two-body observables along the sweeps is investigated in order to characterize the non-equilibrium dynamics in our complex quantum system.
Chaotic level mixing in a two-band Bose-Hubbard model / Parra Murillo, Carlos A; Madroñero, Javier; Wimberger, Sandro Marcel. - In: ANNALEN DER PHYSIK. - ISSN 0003-3804. - 527:9-10(2015), pp. 656-662. [10.1002/andp.201400200]
Chaotic level mixing in a two-band Bose-Hubbard model
WIMBERGER, Sandro Marcel
2015-01-01
Abstract
A two-band Bose-Hubbard model is presented which is shown to be minimal in the necessary coupling terms at resonant tunneling conditions. The dynamics of the many-body problem is studied by sweeping the system across an avoided level crossing. The linear sweep generalizes Landau-Zener transitions from single-particle to many-body realizations. The temporal evolution of single-and two-body observables along the sweeps is investigated in order to characterize the non-equilibrium dynamics in our complex quantum system.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
