TY - JOUR
T1 - Quantum dynamics of attractive versus repulsive bosonic Josephson junctions
T2 - Bose-Hubbard and full-Hamiltonian results
AU - Sakmann, Kaspar
AU - Streltsov, Alexej I.
AU - Alon, Ofir E.
AU - Cederbaum, Lorenz S.
PY - 2010/7/15
Y1 - 2010/7/15
N2 - The quantum dynamics of one-dimensional bosonic Josephson junctions with attractive and repulsive interparticle interactions is studied by using the Bose-Hubbard model and by numerically exact computations of the full many-body Hamiltonian. A symmetry present in the Bose-Hubbard Hamiltonian dictates an equivalence between the evolution in time of the survival probability and the fragmentation of attractive and repulsive Josephson junctions with attractive and repulsive interactions of equal magnitude. The full many-body Hamiltonian does not possess this symmetry and, consequently, the dynamics of the attractive and repulsive junctions are different.
AB - The quantum dynamics of one-dimensional bosonic Josephson junctions with attractive and repulsive interparticle interactions is studied by using the Bose-Hubbard model and by numerically exact computations of the full many-body Hamiltonian. A symmetry present in the Bose-Hubbard Hamiltonian dictates an equivalence between the evolution in time of the survival probability and the fragmentation of attractive and repulsive Josephson junctions with attractive and repulsive interactions of equal magnitude. The full many-body Hamiltonian does not possess this symmetry and, consequently, the dynamics of the attractive and repulsive junctions are different.
UR - http://www.scopus.com/inward/record.url?scp=77954856609&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.82.013620
DO - 10.1103/PhysRevA.82.013620
M3 - Article
AN - SCOPUS:77954856609
SN - 1050-2947
VL - 82
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
M1 - 013620
ER -