Solitons in Trapped Bose-Einstein condensates in one-dimensional optical lattices

Details Solitons in Trapped Bose-Einstein condensates in one-dimensional optical lattices Solitons in Trapped Bose-Einstein condensates in one-dimensional optical lattices

2004-12-02

arxiv.org/abs/cond-mat/0412037v1

Phys Rev A71, 063609 (2005)

Physics

Condensed Matter

Statistical Mechanics

5 pages, Latex with figures

Scientific paper

10.1103/PhysRevA.71.063609

We use Quantum Monte Carlo simulations to show the presence and study the properties of solitons in the one dimensional soft-core bosonic Hubbard model with near neighbor interaction in traps. We show that when the half-filled Charge Density Wave (CDW) phase is doped, solitons are produced and quasi long range order established. We discuss the implications of these results for the presence and robustness of this solitonic phase in Bose-Einstein Condensates (BEC) on one dimensional optical lattices in traps and study the associated excitation spectrum. The density profile exhibits the coexistence of Mott insulator, CDW, and superfluid regions.

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