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Using modified Gaussian distribution to study the physical properties of one and two-component ultracold atoms

C. C. Huang·W. C. Wu
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Abstract

Gaussian distribution is commonly used as a good approximation to study the trapped one-component Bose-condensed atoms with relatively small nonlinear effect. It is not adequate in dealing with the one-component system of large nonlinear effect, nor the two-component system where phase separation exists. We propose a modified Gaussian distribution which is more effective when dealing with the one-component system with relatively large nonlinear terms as well as the two-component system. The modified Gaussian is also used to study the breathing modes of the two-component system, which shows a drastic change in the mode dispersion at the occurrence of the phase separation. The results obtained are in agreement with other numerical results.

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C. C. Huang, W. C. Wu. 2006-12-20. Using modified Gaussian distribution to study the physical properties of one and two-component ultracold atoms. https://doi.org/10.1103/physreva.75.023609

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