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arXiv · 0810.1665

Dipole oscillations of confined lattice bosons in one dimension

Simone Montangero·Rosario Fazio·Peter Zoller·Guido Pupillo
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Abstract

We study the dynamics of a non-integrable system comprising interacting cold bosons trapped in an optical lattice in one-dimension by means of exact time-dependent numerical DMRG techniques. Particles are confined by a parabolic potential, and dipole oscillations are induced by displacing the trap center of a few lattice sites. Depending on the system parameters this motion can vary from undamped to overdamped. We study the dipole oscillations as a function of the lattice displacement, the particle density and the strength of interparticle interactions. These results explain the recent experiment C.D. Fertig et al., Phys. Rev. Lett. 94, 120403 (2005).

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Simone Montangero, Rosario Fazio, Peter Zoller, Guido Pupillo. 2008-10-09. Dipole oscillations of confined lattice bosons in one dimension. https://doi.org/10.1103/physreva.79.041602

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