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Optics & Optoelectronic Technology

Characteristics of Bose-Einstein Condensate Soliton With a Localized Impurity in Various Conventional Traps

Hong Li

Published Jan 1, 2005• 0 citations
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Abstract

The evolution of Bose-Einstein condensate soliton with a localized impurity is investigated by the numerical simulations of the Gross-Pitaevskii (GP) equation. It is found that the impurity has very important effect on the characteristics of the BEC solution that varying with time. The effect depends on the impurity strength, the magnitude and trap and the sort of conventional trap.

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The evolution characteristics of the 2-dimension cake-shaped Bose-Einstein Condensate(BEC) soliton trapped in an anisotropy trap are investigated by solving the Gross-Pitaevskii equation with a variational approach.It is found that by introducing an optical lattice potential into certain direction in a columniform symmetrical magnetic trap,a BEC soliton can tend to be stable in that direction and its stability may increase due to the decrease of the soliton expansion in other directions as a result of the coupling effects on those directions.The effects depends on the number of atoms in the trap,the coefficient of the trap and the parameters of the optical lattice potential.