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

Chou Chun Huang, Wen Chin Wu

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5 Citations (Scopus)

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.

Original languageEnglish
Article number023609
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume75
Issue number2
DOIs
Publication statusPublished - 2007 Feb 6

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normal density functions
physical properties
atoms
breathing
occurrences
approximation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

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AB - 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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