Josephson physics mediated by the Mott insulating phase

Details Josephson physics mediated by the Mott insulating phase Josephson physics mediated by the Mott insulating phase

2008-04-22

arxiv.org/abs/0804.3609v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevA.78.053620

We investigate the static and dynamic properties of bosonic lattice systems in which condensed and Mott insulating phases co-exist due to the presence of a spatially-varying potential. We formulate a description of these inhomogeneous systems and calculate the bulk energy at and near equilibrium. We derive the explicit form of the Josephson coupling between disjoint superfluid regions separated by Mott insulating regions. We obtain detailed estimates for the experimentally-realized case of alternating superfluid and Mott insulating spherical shells in a radially symmetric parabolically-confined cold atom system.

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