Lattice-Ramp Induced Dynamics in an Interacting Bose-Bose Mixture

Details Lattice-Ramp Induced Dynamics in an Interacting Bose-Bose Mixture Lattice-Ramp Induced Dynamics in an Interacting Bose-Bose Mixture

2009-11-03

arxiv.org/abs/0911.0697v2

Phys. Rev. A 81, 043620 (2010)

Physics

Condensed Matter

Quantum Gases

11 pages, 12 figures

Scientific paper

10.1103/PhysRevA.81.043620

We investigate a bosonic quantum gas consisting of two interacting species in an optical lattice at zero and finite temperature. The equilibrium properties and dynamics of this system are obtained by means of the Gutzwiller mean-field method. In particular we model recent experiments where the ramp-up of the optical lattice occurs on a time scale comparable to the tunneling time of the bosons. We demonstrate the violation of adiabaticity of this process with respect to the many-body quantum states, and reproduce and explain the oscillations of the visibility as a function of ramp-up time, as seen in experiments.

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