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

Creators: Hebert, F.; Batrouni, G. G.; Scalettar, R. T.

Others:: Institut Non Linéaire de Nice Sophia-Antipolis (INLN) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS); Department of Physics ; University of California [Davis] (UC Davis) ; University of California (UC)-University of California (UC)

Description

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 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.

Abstract

4 pages

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

Description

Abstract

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