Quantum dynamics of bosons in a double-well potential: Josephson oscillations, self-trapping and ultralong tunneling timesA. N. Salgueiro, A.F.R. de Toledo Piza, G. B. Lemos, R. Drumond, M. C. Nemes and M. WeidemüllerEur. Phys. J. D, 44 3 (2007) 537-540DOI: https://doi.org/10.1140/epjd/e2007-00224-4