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Collective Excitations of Harmonically Trapped Ideal Gases

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 نشر من قبل Bert Van Schaeybroeck
 تاريخ النشر 2008
  مجال البحث فيزياء
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We theoretically study the collective excitations of an ideal gas confined in an isotropic harmonic trap. We give an exact solution to the Boltzmann-Vlasov equation; as expected for a single-component system, the associated mode frequencies are integer multiples of the trapping frequency. We show that the expressions found by the scaling ansatz method are a special case of our solution. Our findings, however, are most useful in case the trap contains more than one phase: we demonstrate how to obtain the oscillation frequencies in case an interface is present between the ideal gas and a different phase.



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